21318375

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{4373}}^1$

素因数の和:4404

約数の個数: 32

約数和(自身を含む): 38211264

約数和(自身を除く): 16892889

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 125, 195, 325, 375, 975, 1625, 4373, 4875, 13119, 21865, 56849, 65595, 109325, 170547, 284245, 327975, 546625, 852735, 1421225, 1639875, 4263675, 7106125, 21318375]

約数ペア:

[(1, 21318375), (3, 7106125), (5, 4263675), (13, 1639875), (15, 1421225), (25, 852735), (39, 546625), (65, 327975), (75, 284245), (125, 170547), (195, 109325), (325, 65595), (375, 56849), (975, 21865), (1625, 13119), (4373, 4875)]