18521580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:260

約数の個数: 192

約数和(自身を含む): 68382720

約数和(自身を除く): 49861140

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 19, 20, 21, 22, 28, 30, 33, 35, 38, 42, 44, 55, 57, 60, 66, 70, 76, 77, 84, 95, 105, 110, 114, 132, 133, 140, 154, 165, 190, 209, 210, 211, 220, 228, 231, 266, 285, 308, 330, 380, 385, 399, 418, 420, 422, 462, 532, 570, 627, 633, 660, 665, 770, 798, 836, 844, 924, 1045, 1055, 1140, 1155, 1254, 1266, 1330, 1463, 1477, 1540, 1596, 1995, 2090, 2110, 2310, 2321, 2508, 2532, 2660, 2926, 2954, 3135, 3165, 3990, 4009, 4180, 4220, 4389, 4431, 4620, 4642, 5852, 5908, 6270, 6330, 6963, 7315, 7385, 7980, 8018, 8778, 8862, 9284, 11605, 12027, 12540, 12660, 13926, 14630, 14770, 16036, 16247, 17556, 17724, 20045, 21945, 22155, 23210, 24054, 27852, 28063, 29260, 29540, 32494, 34815, 40090, 43890, 44099, 44310, 46420, 48108, 48741, 56126, 60135, 64988, 69630, 80180, 81235, 84189, 87780, 88198, 88620, 97482, 112252, 120270, 132297, 139260, 140315, 162470, 168378, 176396, 194964, 220495, 240540, 243705, 264594, 280630, 308693, 324940, 336756, 420945, 440990, 487410, 529188, 561260, 617386, 661485, 841890, 881980, 926079, 974820, 1234772, 1322970, 1543465, 1683780, 1852158, 2645940, 3086930, 3704316, 4630395, 6173860, 9260790, 18521580]

約数ペア:

[(1, 18521580), (2, 9260790), (3, 6173860), (4, 4630395), (5, 3704316), (6, 3086930), (7, 2645940), (10, 1852158), (11, 1683780), (12, 1543465), (14, 1322970), (15, 1234772), (19, 974820), (20, 926079), (21, 881980), (22, 841890), (28, 661485), (30, 617386), (33, 561260), (35, 529188), (38, 487410), (42, 440990), (44, 420945), (55, 336756), (57, 324940), (60, 308693), (66, 280630), (70, 264594), (76, 243705), (77, 240540), (84, 220495), (95, 194964), (105, 176396), (110, 168378), (114, 162470), (132, 140315), (133, 139260), (140, 132297), (154, 120270), (165, 112252), (190, 97482), (209, 88620), (210, 88198), (211, 87780), (220, 84189), (228, 81235), (231, 80180), (266, 69630), (285, 64988), (308, 60135), (330, 56126), (380, 48741), (385, 48108), (399, 46420), (418, 44310), (420, 44099), (422, 43890), (462, 40090), (532, 34815), (570, 32494), (627, 29540), (633, 29260), (660, 28063), (665, 27852), (770, 24054), (798, 23210), (836, 22155), (844, 21945), (924, 20045), (1045, 17724), (1055, 17556), (1140, 16247), (1155, 16036), (1254, 14770), (1266, 14630), (1330, 13926), (1463, 12660), (1477, 12540), (1540, 12027), (1596, 11605), (1995, 9284), (2090, 8862), (2110, 8778), (2310, 8018), (2321, 7980), (2508, 7385), (2532, 7315), (2660, 6963), (2926, 6330), (2954, 6270), (3135, 5908), (3165, 5852), (3990, 4642), (4009, 4620), (4180, 4431), (4220, 4389)]