201980020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{223}}^1$

素因数の和:445

約数の個数: 96

約数和(自身を含む): 487710720

約数和(自身を除く): 285730700

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 179, 220, 223, 230, 253, 358, 446, 460, 506, 716, 892, 895, 1012, 1115, 1265, 1790, 1969, 2230, 2453, 2530, 3580, 3938, 4117, 4460, 4906, 5060, 5129, 7876, 8234, 9812, 9845, 10258, 12265, 16468, 19690, 20516, 20585, 24530, 25645, 39380, 39917, 41170, 45287, 49060, 51290, 56419, 79834, 82340, 90574, 102580, 112838, 159668, 181148, 199585, 225676, 226435, 282095, 399170, 439087, 452870, 564190, 798340, 878174, 905740, 918091, 1128380, 1756348, 1836182, 2195435, 3672364, 4390870, 4590455, 8781740, 9180910, 10099001, 18361820, 20198002, 40396004, 50495005, 100990010, 201980020]

約数ペア:

[(1, 201980020), (2, 100990010), (4, 50495005), (5, 40396004), (10, 20198002), (11, 18361820), (20, 10099001), (22, 9180910), (23, 8781740), (44, 4590455), (46, 4390870), (55, 3672364), (92, 2195435), (110, 1836182), (115, 1756348), (179, 1128380), (220, 918091), (223, 905740), (230, 878174), (253, 798340), (358, 564190), (446, 452870), (460, 439087), (506, 399170), (716, 282095), (892, 226435), (895, 225676), (1012, 199585), (1115, 181148), (1265, 159668), (1790, 112838), (1969, 102580), (2230, 90574), (2453, 82340), (2530, 79834), (3580, 56419), (3938, 51290), (4117, 49060), (4460, 45287), (4906, 41170), (5060, 39917), (5129, 39380), (7876, 25645), (8234, 24530), (9812, 20585), (9845, 20516), (10258, 19690), (12265, 16468)]