28957240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{239}}^1$

素因数の和:496

約数の個数: 64

約数和(自身を含む): 70761600

約数和(自身を除く): 41804360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 233, 239, 260, 466, 478, 520, 932, 956, 1165, 1195, 1864, 1912, 2330, 2390, 3029, 3107, 4660, 4780, 6058, 6214, 9320, 9560, 12116, 12428, 15145, 15535, 24232, 24856, 30290, 31070, 55687, 60580, 62140, 111374, 121160, 124280, 222748, 278435, 445496, 556870, 723931, 1113740, 1447862, 2227480, 2895724, 3619655, 5791448, 7239310, 14478620, 28957240]

約数ペア:

[(1, 28957240), (2, 14478620), (4, 7239310), (5, 5791448), (8, 3619655), (10, 2895724), (13, 2227480), (20, 1447862), (26, 1113740), (40, 723931), (52, 556870), (65, 445496), (104, 278435), (130, 222748), (233, 124280), (239, 121160), (260, 111374), (466, 62140), (478, 60580), (520, 55687), (932, 31070), (956, 30290), (1165, 24856), (1195, 24232), (1864, 15535), (1912, 15145), (2330, 12428), (2390, 12116), (3029, 9560), (3107, 9320), (4660, 6214), (4780, 6058)]