31201820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2927}}^1$

素因数の和:2990

約数の個数: 48

約数和(自身を含む): 72309888

約数和(自身を除く): 41108068

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 205, 260, 410, 533, 820, 1066, 2132, 2665, 2927, 5330, 5854, 10660, 11708, 14635, 29270, 38051, 58540, 76102, 120007, 152204, 190255, 240014, 380510, 480028, 600035, 761020, 1200070, 1560091, 2400140, 3120182, 6240364, 7800455, 15600910, 31201820]

約数ペア:

[(1, 31201820), (2, 15600910), (4, 7800455), (5, 6240364), (10, 3120182), (13, 2400140), (20, 1560091), (26, 1200070), (41, 761020), (52, 600035), (65, 480028), (82, 380510), (130, 240014), (164, 190255), (205, 152204), (260, 120007), (410, 76102), (533, 58540), (820, 38051), (1066, 29270), (2132, 14635), (2665, 11708), (2927, 10660), (5330, 5854)]