20011208

素因数分解:

$2^3\times 7^2\times {\mathrm{71}}^1\times {\mathrm{719}}^1$

素因数の和:810

約数の個数: 48

約数和(自身を含む): 44323200

約数和(自身を除く): 24311992

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 71, 98, 142, 196, 284, 392, 497, 568, 719, 994, 1438, 1988, 2876, 3479, 3976, 5033, 5752, 6958, 10066, 13916, 20132, 27832, 35231, 40264, 51049, 70462, 102098, 140924, 204196, 281848, 357343, 408392, 714686, 1429372, 2501401, 2858744, 5002802, 10005604, 20011208]

約数ペア:

[(1, 20011208), (2, 10005604), (4, 5002802), (7, 2858744), (8, 2501401), (14, 1429372), (28, 714686), (49, 408392), (56, 357343), (71, 281848), (98, 204196), (142, 140924), (196, 102098), (284, 70462), (392, 51049), (497, 40264), (568, 35231), (719, 27832), (994, 20132), (1438, 13916), (1988, 10066), (2876, 6958), (3479, 5752), (3976, 5033)]