211436875

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{491}}^1$

素因数の和:577

約数の個数: 40

約数和(自身を含む): 290494512

約数和(自身を除く): 79057637

約数列:

[1, 5, 13, 25, 53, 65, 125, 265, 325, 491, 625, 689, 1325, 1625, 2455, 3445, 6383, 6625, 8125, 12275, 17225, 26023, 31915, 33125, 61375, 86125, 130115, 159575, 306875, 338299, 430625, 650575, 797875, 1691495, 3252875, 3989375, 8457475, 16264375, 42287375, 211436875]

約数ペア:

[(1, 211436875), (5, 42287375), (13, 16264375), (25, 8457475), (53, 3989375), (65, 3252875), (125, 1691495), (265, 797875), (325, 650575), (491, 430625), (625, 338299), (689, 306875), (1325, 159575), (1625, 130115), (2455, 86125), (3445, 61375), (6383, 33125), (6625, 31915), (8125, 26023), (12275, 17225)]