71319020

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1\times {\mathrm{167}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 152748288

約数和(自身を除く): 81429268

約数列:

[1, 2, 4, 5, 10, 20, 131, 163, 167, 262, 326, 334, 524, 652, 655, 668, 815, 835, 1310, 1630, 1670, 2620, 3260, 3340, 21353, 21877, 27221, 42706, 43754, 54442, 85412, 87508, 106765, 108884, 109385, 136105, 213530, 218770, 272210, 427060, 437540, 544420, 3565951, 7131902, 14263804, 17829755, 35659510, 71319020]

約数ペア:

[(1, 71319020), (2, 35659510), (4, 17829755), (5, 14263804), (10, 7131902), (20, 3565951), (131, 544420), (163, 437540), (167, 427060), (262, 272210), (326, 218770), (334, 213530), (524, 136105), (652, 109385), (655, 108884), (668, 106765), (815, 87508), (835, 85412), (1310, 54442), (1630, 43754), (1670, 42706), (2620, 27221), (3260, 21877), (3340, 21353)]