2078978020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1993}}^1\times {\mathrm{7451}}^1$

素因数の和:9460

約数の個数: 48

約数和(自身を含む): 4992720768

約数和(自身を除く): 2913742748

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1993, 3986, 7451, 7972, 9965, 13951, 14902, 19930, 27902, 29804, 37255, 39860, 52157, 55804, 69755, 74510, 104314, 139510, 149020, 208628, 260785, 279020, 521570, 1043140, 14849843, 29699686, 59399372, 74249215, 103948901, 148498430, 207897802, 296996860, 415795604, 519744505, 1039489010, 2078978020]

約数ペア:

[(1, 2078978020), (2, 1039489010), (4, 519744505), (5, 415795604), (7, 296996860), (10, 207897802), (14, 148498430), (20, 103948901), (28, 74249215), (35, 59399372), (70, 29699686), (140, 14849843), (1993, 1043140), (3986, 521570), (7451, 279020), (7972, 260785), (9965, 208628), (13951, 149020), (14902, 139510), (19930, 104314), (27902, 74510), (29804, 69755), (37255, 55804), (39860, 52157)]