28880625

素因数分解:

$3^1\times 5^4\times {\mathrm{73}}^1\times {\mathrm{211}}^1$

素因数の和:307

約数の個数: 40

約数和(自身を含む): 49009312

約数和(自身を除く): 20128687

約数列:

[1, 3, 5, 15, 25, 73, 75, 125, 211, 219, 365, 375, 625, 633, 1055, 1095, 1825, 1875, 3165, 5275, 5475, 9125, 15403, 15825, 26375, 27375, 45625, 46209, 77015, 79125, 131875, 136875, 231045, 385075, 395625, 1155225, 1925375, 5776125, 9626875, 28880625]

約数ペア:

[(1, 28880625), (3, 9626875), (5, 5776125), (15, 1925375), (25, 1155225), (73, 395625), (75, 385075), (125, 231045), (211, 136875), (219, 131875), (365, 79125), (375, 77015), (625, 46209), (633, 45625), (1055, 27375), (1095, 26375), (1825, 15825), (1875, 15403), (3165, 9125), (5275, 5475)]