25881520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{409}}^1$

素因数の和:542

約数の個数: 80

約数和(自身を含む): 69549120

約数和(自身を除く): 43667600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 113, 140, 226, 280, 409, 452, 560, 565, 791, 818, 904, 1130, 1582, 1636, 1808, 2045, 2260, 2863, 3164, 3272, 3955, 4090, 4520, 5726, 6328, 6544, 7910, 8180, 9040, 11452, 12656, 14315, 15820, 16360, 22904, 28630, 31640, 32720, 45808, 46217, 57260, 63280, 92434, 114520, 184868, 229040, 231085, 323519, 369736, 462170, 647038, 739472, 924340, 1294076, 1617595, 1848680, 2588152, 3235190, 3697360, 5176304, 6470380, 12940760, 25881520]

約数ペア:

[(1, 25881520), (2, 12940760), (4, 6470380), (5, 5176304), (7, 3697360), (8, 3235190), (10, 2588152), (14, 1848680), (16, 1617595), (20, 1294076), (28, 924340), (35, 739472), (40, 647038), (56, 462170), (70, 369736), (80, 323519), (112, 231085), (113, 229040), (140, 184868), (226, 114520), (280, 92434), (409, 63280), (452, 57260), (560, 46217), (565, 45808), (791, 32720), (818, 31640), (904, 28630), (1130, 22904), (1582, 16360), (1636, 15820), (1808, 14315), (2045, 12656), (2260, 11452), (2863, 9040), (3164, 8180), (3272, 7910), (3955, 6544), (4090, 6328), (4520, 5726)]