21513700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1$

素因数の和:126

約数の個数: 108

約数和(自身を含む): 54006960

約数和(自身を除く): 32493260

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 38, 50, 52, 65, 67, 76, 95, 100, 130, 134, 169, 190, 247, 260, 268, 325, 335, 338, 380, 475, 494, 650, 670, 676, 845, 871, 950, 988, 1235, 1273, 1300, 1340, 1675, 1690, 1742, 1900, 2470, 2546, 3211, 3350, 3380, 3484, 4225, 4355, 4940, 5092, 6175, 6365, 6422, 6700, 8450, 8710, 11323, 12350, 12730, 12844, 16055, 16549, 16900, 17420, 21775, 22646, 24700, 25460, 31825, 32110, 33098, 43550, 45292, 56615, 63650, 64220, 66196, 80275, 82745, 87100, 113230, 127300, 160550, 165490, 215137, 226460, 283075, 321100, 330980, 413725, 430274, 566150, 827450, 860548, 1075685, 1132300, 1654900, 2151370, 4302740, 5378425, 10756850, 21513700]

約数ペア:

[(1, 21513700), (2, 10756850), (4, 5378425), (5, 4302740), (10, 2151370), (13, 1654900), (19, 1132300), (20, 1075685), (25, 860548), (26, 827450), (38, 566150), (50, 430274), (52, 413725), (65, 330980), (67, 321100), (76, 283075), (95, 226460), (100, 215137), (130, 165490), (134, 160550), (169, 127300), (190, 113230), (247, 87100), (260, 82745), (268, 80275), (325, 66196), (335, 64220), (338, 63650), (380, 56615), (475, 45292), (494, 43550), (650, 33098), (670, 32110), (676, 31825), (845, 25460), (871, 24700), (950, 22646), (988, 21775), (1235, 17420), (1273, 16900), (1300, 16549), (1340, 16055), (1675, 12844), (1690, 12730), (1742, 12350), (1900, 11323), (2470, 8710), (2546, 8450), (3211, 6700), (3350, 6422), (3380, 6365), (3484, 6175), (4225, 5092), (4355, 4940)]