81358375

素因数分解:

$5^3\times 7^2\times {\mathrm{37}}^1\times {\mathrm{359}}^1$

素因数の和:425

約数の個数: 48

約数和(自身を含む): 121642560

約数和(自身を除く): 40284185

約数列:

[1, 5, 7, 25, 35, 37, 49, 125, 175, 185, 245, 259, 359, 875, 925, 1225, 1295, 1795, 1813, 2513, 4625, 6125, 6475, 8975, 9065, 12565, 13283, 17591, 32375, 44875, 45325, 62825, 66415, 87955, 92981, 226625, 314125, 332075, 439775, 464905, 650867, 1660375, 2198875, 2324525, 3254335, 11622625, 16271675, 81358375]

約数ペア:

[(1, 81358375), (5, 16271675), (7, 11622625), (25, 3254335), (35, 2324525), (37, 2198875), (49, 1660375), (125, 650867), (175, 464905), (185, 439775), (245, 332075), (259, 314125), (359, 226625), (875, 92981), (925, 87955), (1225, 66415), (1295, 62825), (1795, 45325), (1813, 44875), (2513, 32375), (4625, 17591), (6125, 13283), (6475, 12565), (8975, 9065)]