21580440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1117}}^1$

素因数の和:1161

約数の個数: 128

約数和(自身を含む): 77276160

約数和(自身を除く): 55695720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 56, 60, 69, 70, 84, 92, 105, 115, 120, 138, 140, 161, 168, 184, 210, 230, 276, 280, 322, 345, 420, 460, 483, 552, 644, 690, 805, 840, 920, 966, 1117, 1288, 1380, 1610, 1932, 2234, 2415, 2760, 3220, 3351, 3864, 4468, 4830, 5585, 6440, 6702, 7819, 8936, 9660, 11170, 13404, 15638, 16755, 19320, 22340, 23457, 25691, 26808, 31276, 33510, 39095, 44680, 46914, 51382, 62552, 67020, 77073, 78190, 93828, 102764, 117285, 128455, 134040, 154146, 156380, 179837, 187656, 205528, 234570, 256910, 308292, 312760, 359674, 385365, 469140, 513820, 539511, 616584, 719348, 770730, 899185, 938280, 1027640, 1079022, 1438696, 1541460, 1798370, 2158044, 2697555, 3082920, 3596740, 4316088, 5395110, 7193480, 10790220, 21580440]

約数ペア:

[(1, 21580440), (2, 10790220), (3, 7193480), (4, 5395110), (5, 4316088), (6, 3596740), (7, 3082920), (8, 2697555), (10, 2158044), (12, 1798370), (14, 1541460), (15, 1438696), (20, 1079022), (21, 1027640), (23, 938280), (24, 899185), (28, 770730), (30, 719348), (35, 616584), (40, 539511), (42, 513820), (46, 469140), (56, 385365), (60, 359674), (69, 312760), (70, 308292), (84, 256910), (92, 234570), (105, 205528), (115, 187656), (120, 179837), (138, 156380), (140, 154146), (161, 134040), (168, 128455), (184, 117285), (210, 102764), (230, 93828), (276, 78190), (280, 77073), (322, 67020), (345, 62552), (420, 51382), (460, 46914), (483, 44680), (552, 39095), (644, 33510), (690, 31276), (805, 26808), (840, 25691), (920, 23457), (966, 22340), (1117, 19320), (1288, 16755), (1380, 15638), (1610, 13404), (1932, 11170), (2234, 9660), (2415, 8936), (2760, 7819), (3220, 6702), (3351, 6440), (3864, 5585), (4468, 4830)]