21401940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50957}}^1$

素因数の和:50976

約数の個数: 48

約数和(自身を含む): 68487552

約数和(自身を除く): 47085612

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 50957, 101914, 152871, 203828, 254785, 305742, 356699, 509570, 611484, 713398, 764355, 1019140, 1070097, 1426796, 1528710, 1783495, 2140194, 3057420, 3566990, 4280388, 5350485, 7133980, 10700970, 21401940]

約数ペア:

[(1, 21401940), (2, 10700970), (3, 7133980), (4, 5350485), (5, 4280388), (6, 3566990), (7, 3057420), (10, 2140194), (12, 1783495), (14, 1528710), (15, 1426796), (20, 1070097), (21, 1019140), (28, 764355), (30, 713398), (35, 611484), (42, 509570), (60, 356699), (70, 305742), (84, 254785), (105, 203828), (140, 152871), (210, 101914), (420, 50957)]