31620280

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{2917}}^1$

素因数の和:3199

約数の個数: 32

約数和(自身を含む): 71432640

約数和(自身を除く): 39812360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1355, 2168, 2710, 2917, 5420, 5834, 10840, 11668, 14585, 23336, 29170, 58340, 116680, 790507, 1581014, 3162028, 3952535, 6324056, 7905070, 15810140, 31620280]

約数ペア:

[(1, 31620280), (2, 15810140), (4, 7905070), (5, 6324056), (8, 3952535), (10, 3162028), (20, 1581014), (40, 790507), (271, 116680), (542, 58340), (1084, 29170), (1355, 23336), (2168, 14585), (2710, 11668), (2917, 10840), (5420, 5834)]