20347575

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 36009600

約数和(自身を除く): 15662025

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 109, 131, 285, 327, 393, 475, 545, 655, 1425, 1635, 1965, 2071, 2489, 2725, 3275, 6213, 7467, 8175, 9825, 10355, 12445, 14279, 31065, 37335, 42837, 51775, 62225, 71395, 155325, 186675, 214185, 271301, 356975, 813903, 1070925, 1356505, 4069515, 6782525, 20347575]

約数ペア:

[(1, 20347575), (3, 6782525), (5, 4069515), (15, 1356505), (19, 1070925), (25, 813903), (57, 356975), (75, 271301), (95, 214185), (109, 186675), (131, 155325), (285, 71395), (327, 62225), (393, 51775), (475, 42837), (545, 37335), (655, 31065), (1425, 14279), (1635, 12445), (1965, 10355), (2071, 9825), (2489, 8175), (2725, 7467), (3275, 6213)]