398878125

素因数分解:

$3^1\times 5^5\times {\mathrm{157}}^1\times {\mathrm{271}}^1$

素因数の和:456

約数の個数: 48

約数和(自身を含む): 671457024

約数和(自身を除く): 272578899

約数列:

[1, 3, 5, 15, 25, 75, 125, 157, 271, 375, 471, 625, 785, 813, 1355, 1875, 2355, 3125, 3925, 4065, 6775, 9375, 11775, 19625, 20325, 33875, 42547, 58875, 98125, 101625, 127641, 169375, 212735, 294375, 490625, 508125, 638205, 846875, 1063675, 1471875, 2540625, 3191025, 5318375, 15955125, 26591875, 79775625, 132959375, 398878125]

約数ペア:

[(1, 398878125), (3, 132959375), (5, 79775625), (15, 26591875), (25, 15955125), (75, 5318375), (125, 3191025), (157, 2540625), (271, 1471875), (375, 1063675), (471, 846875), (625, 638205), (785, 508125), (813, 490625), (1355, 294375), (1875, 212735), (2355, 169375), (3125, 127641), (3925, 101625), (4065, 98125), (6775, 58875), (9375, 42547), (11775, 33875), (19625, 20325)]