220512920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{1091}}^1$

素因数の和:1296

約数の個数: 64

約数和(自身を含む): 515773440

約数和(自身を除く): 295260520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 163, 248, 310, 326, 620, 652, 815, 1091, 1240, 1304, 1630, 2182, 3260, 4364, 5053, 5455, 6520, 8728, 10106, 10910, 20212, 21820, 25265, 33821, 40424, 43640, 50530, 67642, 101060, 135284, 169105, 177833, 202120, 270568, 338210, 355666, 676420, 711332, 889165, 1352840, 1422664, 1778330, 3556660, 5512823, 7113320, 11025646, 22051292, 27564115, 44102584, 55128230, 110256460, 220512920]

約数ペア:

[(1, 220512920), (2, 110256460), (4, 55128230), (5, 44102584), (8, 27564115), (10, 22051292), (20, 11025646), (31, 7113320), (40, 5512823), (62, 3556660), (124, 1778330), (155, 1422664), (163, 1352840), (248, 889165), (310, 711332), (326, 676420), (620, 355666), (652, 338210), (815, 270568), (1091, 202120), (1240, 177833), (1304, 169105), (1630, 135284), (2182, 101060), (3260, 67642), (4364, 50530), (5053, 43640), (5455, 40424), (6520, 33821), (8728, 25265), (10106, 21820), (10910, 20212)]