21543625

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1$

素因数の和:274

約数の個数: 32

約数和(自身を含む): 29053440

約数和(自身を除く): 7509815

約数列:

[1, 5, 19, 25, 47, 95, 125, 193, 235, 475, 893, 965, 1175, 2375, 3667, 4465, 4825, 5875, 9071, 18335, 22325, 24125, 45355, 91675, 111625, 172349, 226775, 458375, 861745, 1133875, 4308725, 21543625]

約数ペア:

[(1, 21543625), (5, 4308725), (19, 1133875), (25, 861745), (47, 458375), (95, 226775), (125, 172349), (193, 111625), (235, 91675), (475, 45355), (893, 24125), (965, 22325), (1175, 18335), (2375, 9071), (3667, 5875), (4465, 4825)]