20964125

素因数分解:

$5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:151

約数の個数: 64

約数和(自身を含む): 34245120

約数和(自身を除く): 13280995

約数列:

[1, 5, 7, 13, 19, 25, 35, 65, 91, 95, 97, 125, 133, 175, 247, 325, 455, 475, 485, 665, 679, 875, 1235, 1261, 1625, 1729, 1843, 2275, 2375, 2425, 3325, 3395, 6175, 6305, 8645, 8827, 9215, 11375, 12125, 12901, 16625, 16975, 23959, 30875, 31525, 43225, 44135, 46075, 64505, 84875, 119795, 157625, 167713, 216125, 220675, 230375, 322525, 598975, 838565, 1103375, 1612625, 2994875, 4192825, 20964125]

約数ペア:

[(1, 20964125), (5, 4192825), (7, 2994875), (13, 1612625), (19, 1103375), (25, 838565), (35, 598975), (65, 322525), (91, 230375), (95, 220675), (97, 216125), (125, 167713), (133, 157625), (175, 119795), (247, 84875), (325, 64505), (455, 46075), (475, 44135), (485, 43225), (665, 31525), (679, 30875), (875, 23959), (1235, 16975), (1261, 16625), (1625, 12901), (1729, 12125), (1843, 11375), (2275, 9215), (2375, 8827), (2425, 8645), (3325, 6305), (3395, 6175)]