28165940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{443}}^1$

素因数の和:497

約数の個数: 72

約数和(自身を含む): 68699232

約数和(自身を除く): 40533292

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 289, 340, 374, 443, 578, 748, 886, 935, 1156, 1445, 1772, 1870, 2215, 2890, 3179, 3740, 4430, 4873, 5780, 6358, 7531, 8860, 9746, 12716, 15062, 15895, 19492, 24365, 30124, 31790, 37655, 48730, 63580, 75310, 82841, 97460, 128027, 150620, 165682, 256054, 331364, 414205, 512108, 640135, 828410, 1280270, 1408297, 1656820, 2560540, 2816594, 5633188, 7041485, 14082970, 28165940]

約数ペア:

[(1, 28165940), (2, 14082970), (4, 7041485), (5, 5633188), (10, 2816594), (11, 2560540), (17, 1656820), (20, 1408297), (22, 1280270), (34, 828410), (44, 640135), (55, 512108), (68, 414205), (85, 331364), (110, 256054), (170, 165682), (187, 150620), (220, 128027), (289, 97460), (340, 82841), (374, 75310), (443, 63580), (578, 48730), (748, 37655), (886, 31790), (935, 30124), (1156, 24365), (1445, 19492), (1772, 15895), (1870, 15062), (2215, 12716), (2890, 9746), (3179, 8860), (3740, 7531), (4430, 6358), (4873, 5780)]