21249125

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{389}}^1$

素因数の和:446

約数の個数: 32

約数和(自身を含む): 29203200

約数和(自身を除く): 7954075

約数列:

[1, 5, 19, 23, 25, 95, 115, 125, 389, 437, 475, 575, 1945, 2185, 2375, 2875, 7391, 8947, 9725, 10925, 36955, 44735, 48625, 54625, 169993, 184775, 223675, 849965, 923875, 1118375, 4249825, 21249125]

約数ペア:

[(1, 21249125), (5, 4249825), (19, 1118375), (23, 923875), (25, 849965), (95, 223675), (115, 184775), (125, 169993), (389, 54625), (437, 48625), (475, 44735), (575, 36955), (1945, 10925), (2185, 9725), (2375, 8947), (2875, 7391)]