25529980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:371

約数の個数: 72

約数和(自身を含む): 63201600

約数和(自身を除く): 37671620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 109, 140, 196, 218, 239, 245, 436, 478, 490, 545, 763, 956, 980, 1090, 1195, 1526, 1673, 2180, 2390, 3052, 3346, 3815, 4780, 5341, 6692, 7630, 8365, 10682, 11711, 15260, 16730, 21364, 23422, 26051, 26705, 33460, 46844, 52102, 53410, 58555, 104204, 106820, 117110, 130255, 182357, 234220, 260510, 364714, 521020, 729428, 911785, 1276499, 1823570, 2552998, 3647140, 5105996, 6382495, 12764990, 25529980]

約数ペア:

[(1, 25529980), (2, 12764990), (4, 6382495), (5, 5105996), (7, 3647140), (10, 2552998), (14, 1823570), (20, 1276499), (28, 911785), (35, 729428), (49, 521020), (70, 364714), (98, 260510), (109, 234220), (140, 182357), (196, 130255), (218, 117110), (239, 106820), (245, 104204), (436, 58555), (478, 53410), (490, 52102), (545, 46844), (763, 33460), (956, 26705), (980, 26051), (1090, 23422), (1195, 21364), (1526, 16730), (1673, 15260), (2180, 11711), (2390, 10682), (3052, 8365), (3346, 7630), (3815, 6692), (4780, 5341)]