20390040

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1$

素因数の和:318

約数の個数: 192

約数和(自身を含む): 76377600

約数和(自身を除く): 55987560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 19, 20, 22, 24, 30, 33, 36, 38, 40, 44, 45, 55, 57, 60, 66, 72, 76, 88, 90, 95, 99, 110, 114, 120, 132, 152, 165, 171, 180, 190, 198, 209, 220, 228, 264, 271, 285, 330, 342, 360, 380, 396, 418, 440, 456, 495, 542, 570, 627, 660, 684, 760, 792, 813, 836, 855, 990, 1045, 1084, 1140, 1254, 1320, 1355, 1368, 1626, 1672, 1710, 1881, 1980, 2090, 2168, 2280, 2439, 2508, 2710, 2981, 3135, 3252, 3420, 3762, 3960, 4065, 4180, 4878, 5016, 5149, 5420, 5962, 6270, 6504, 6840, 7524, 8130, 8360, 8943, 9405, 9756, 10298, 10840, 11924, 12195, 12540, 14905, 15048, 15447, 16260, 17886, 18810, 19512, 20596, 23848, 24390, 25080, 25745, 26829, 29810, 30894, 32520, 35772, 37620, 41192, 44715, 46341, 48780, 51490, 53658, 56639, 59620, 61788, 71544, 75240, 77235, 89430, 92682, 97560, 102980, 107316, 113278, 119240, 123576, 134145, 154470, 169917, 178860, 185364, 205960, 214632, 226556, 231705, 268290, 283195, 308940, 339834, 357720, 370728, 453112, 463410, 509751, 536580, 566390, 617880, 679668, 849585, 926820, 1019502, 1073160, 1132780, 1359336, 1699170, 1853640, 2039004, 2265560, 2548755, 3398340, 4078008, 5097510, 6796680, 10195020, 20390040]

約数ペア:

[(1, 20390040), (2, 10195020), (3, 6796680), (4, 5097510), (5, 4078008), (6, 3398340), (8, 2548755), (9, 2265560), (10, 2039004), (11, 1853640), (12, 1699170), (15, 1359336), (18, 1132780), (19, 1073160), (20, 1019502), (22, 926820), (24, 849585), (30, 679668), (33, 617880), (36, 566390), (38, 536580), (40, 509751), (44, 463410), (45, 453112), (55, 370728), (57, 357720), (60, 339834), (66, 308940), (72, 283195), (76, 268290), (88, 231705), (90, 226556), (95, 214632), (99, 205960), (110, 185364), (114, 178860), (120, 169917), (132, 154470), (152, 134145), (165, 123576), (171, 119240), (180, 113278), (190, 107316), (198, 102980), (209, 97560), (220, 92682), (228, 89430), (264, 77235), (271, 75240), (285, 71544), (330, 61788), (342, 59620), (360, 56639), (380, 53658), (396, 51490), (418, 48780), (440, 46341), (456, 44715), (495, 41192), (542, 37620), (570, 35772), (627, 32520), (660, 30894), (684, 29810), (760, 26829), (792, 25745), (813, 25080), (836, 24390), (855, 23848), (990, 20596), (1045, 19512), (1084, 18810), (1140, 17886), (1254, 16260), (1320, 15447), (1355, 15048), (1368, 14905), (1626, 12540), (1672, 12195), (1710, 11924), (1881, 10840), (1980, 10298), (2090, 9756), (2168, 9405), (2280, 8943), (2439, 8360), (2508, 8130), (2710, 7524), (2981, 6840), (3135, 6504), (3252, 6270), (3420, 5962), (3762, 5420), (3960, 5149), (4065, 5016), (4180, 4878)]