2020306840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{661}}^1\times {\mathrm{1777}}^1$

素因数の和:2492

約数の個数: 64

約数和(自身を含む): 4661062560

約数和(自身を除く): 2640755720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 661, 860, 1322, 1720, 1777, 2644, 3305, 3554, 5288, 6610, 7108, 8885, 13220, 14216, 17770, 26440, 28423, 35540, 56846, 71080, 76411, 113692, 142115, 152822, 227384, 284230, 305644, 382055, 568460, 611288, 764110, 1136920, 1174597, 1528220, 2349194, 3056440, 4698388, 5872985, 9396776, 11745970, 23491940, 46983880, 50507671, 101015342, 202030684, 252538355, 404061368, 505076710, 1010153420, 2020306840]

約数ペア:

[(1, 2020306840), (2, 1010153420), (4, 505076710), (5, 404061368), (8, 252538355), (10, 202030684), (20, 101015342), (40, 50507671), (43, 46983880), (86, 23491940), (172, 11745970), (215, 9396776), (344, 5872985), (430, 4698388), (661, 3056440), (860, 2349194), (1322, 1528220), (1720, 1174597), (1777, 1136920), (2644, 764110), (3305, 611288), (3554, 568460), (5288, 382055), (6610, 305644), (7108, 284230), (8885, 227384), (13220, 152822), (14216, 142115), (17770, 113692), (26440, 76411), (28423, 71080), (35540, 56846)]