20470580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1831}}^1$

素因数の和:1896

約数の個数: 48

約数和(自身を含む): 47397504

約数和(自身を除く): 26926924

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 260, 430, 559, 860, 1118, 1831, 2236, 2795, 3662, 5590, 7324, 9155, 11180, 18310, 23803, 36620, 47606, 78733, 95212, 119015, 157466, 238030, 314932, 393665, 476060, 787330, 1023529, 1574660, 2047058, 4094116, 5117645, 10235290, 20470580]

約数ペア:

[(1, 20470580), (2, 10235290), (4, 5117645), (5, 4094116), (10, 2047058), (13, 1574660), (20, 1023529), (26, 787330), (43, 476060), (52, 393665), (65, 314932), (86, 238030), (130, 157466), (172, 119015), (215, 95212), (260, 78733), (430, 47606), (559, 36620), (860, 23803), (1118, 18310), (1831, 11180), (2236, 9155), (2795, 7324), (3662, 5590)]