31751280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:260

約数の個数: 240

約数和(自身を含む): 123027840

約数和(自身を除く): 91276560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 19, 20, 22, 24, 30, 33, 36, 38, 40, 44, 45, 48, 55, 57, 60, 66, 72, 76, 80, 88, 90, 95, 99, 110, 114, 120, 132, 144, 152, 165, 171, 176, 180, 190, 198, 209, 211, 220, 228, 240, 264, 285, 304, 330, 342, 360, 380, 396, 418, 422, 440, 456, 495, 528, 570, 627, 633, 660, 684, 720, 760, 792, 836, 844, 855, 880, 912, 990, 1045, 1055, 1140, 1254, 1266, 1320, 1368, 1520, 1584, 1672, 1688, 1710, 1881, 1899, 1980, 2090, 2110, 2280, 2321, 2508, 2532, 2640, 2736, 3135, 3165, 3344, 3376, 3420, 3762, 3798, 3960, 4009, 4180, 4220, 4560, 4642, 5016, 5064, 6270, 6330, 6840, 6963, 7524, 7596, 7920, 8018, 8360, 8440, 9284, 9405, 9495, 10032, 10128, 11605, 12027, 12540, 12660, 13680, 13926, 15048, 15192, 16036, 16720, 16880, 18568, 18810, 18990, 20045, 20889, 23210, 24054, 25080, 25320, 27852, 30096, 30384, 32072, 34815, 36081, 37136, 37620, 37980, 40090, 41778, 44099, 46420, 48108, 50160, 50640, 55704, 60135, 64144, 69630, 72162, 75240, 75960, 80180, 83556, 88198, 92840, 96216, 104445, 111408, 120270, 132297, 139260, 144324, 150480, 151920, 160360, 167112, 176396, 180405, 185680, 192432, 208890, 220495, 240540, 264594, 278520, 288648, 320720, 334224, 352792, 360810, 396891, 417780, 440990, 481080, 529188, 557040, 577296, 661485, 705584, 721620, 793782, 835560, 881980, 962160, 1058376, 1322970, 1443240, 1587564, 1671120, 1763960, 1984455, 2116752, 2645940, 2886480, 3175128, 3527920, 3968910, 5291880, 6350256, 7937820, 10583760, 15875640, 31751280]

約数ペア:

[(1, 31751280), (2, 15875640), (3, 10583760), (4, 7937820), (5, 6350256), (6, 5291880), (8, 3968910), (9, 3527920), (10, 3175128), (11, 2886480), (12, 2645940), (15, 2116752), (16, 1984455), (18, 1763960), (19, 1671120), (20, 1587564), (22, 1443240), (24, 1322970), (30, 1058376), (33, 962160), (36, 881980), (38, 835560), (40, 793782), (44, 721620), (45, 705584), (48, 661485), (55, 577296), (57, 557040), (60, 529188), (66, 481080), (72, 440990), (76, 417780), (80, 396891), (88, 360810), (90, 352792), (95, 334224), (99, 320720), (110, 288648), (114, 278520), (120, 264594), (132, 240540), (144, 220495), (152, 208890), (165, 192432), (171, 185680), (176, 180405), (180, 176396), (190, 167112), (198, 160360), (209, 151920), (211, 150480), (220, 144324), (228, 139260), (240, 132297), (264, 120270), (285, 111408), (304, 104445), (330, 96216), (342, 92840), (360, 88198), (380, 83556), (396, 80180), (418, 75960), (422, 75240), (440, 72162), (456, 69630), (495, 64144), (528, 60135), (570, 55704), (627, 50640), (633, 50160), (660, 48108), (684, 46420), (720, 44099), (760, 41778), (792, 40090), (836, 37980), (844, 37620), (855, 37136), (880, 36081), (912, 34815), (990, 32072), (1045, 30384), (1055, 30096), (1140, 27852), (1254, 25320), (1266, 25080), (1320, 24054), (1368, 23210), (1520, 20889), (1584, 20045), (1672, 18990), (1688, 18810), (1710, 18568), (1881, 16880), (1899, 16720), (1980, 16036), (2090, 15192), (2110, 15048), (2280, 13926), (2321, 13680), (2508, 12660), (2532, 12540), (2640, 12027), (2736, 11605), (3135, 10128), (3165, 10032), (3344, 9495), (3376, 9405), (3420, 9284), (3762, 8440), (3798, 8360), (3960, 8018), (4009, 7920), (4180, 7596), (4220, 7524), (4560, 6963), (4642, 6840), (5016, 6330), (5064, 6270)]