2019970480

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{641}}^1\times {\mathrm{3581}}^1$

素因数の和:4246

約数の個数: 80

約数和(自身を含む): 5132805408

約数和(自身を除く): 3112834928

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 641, 880, 1282, 2564, 3205, 3581, 5128, 6410, 7051, 7162, 10256, 12820, 14102, 14324, 17905, 25640, 28204, 28648, 35255, 35810, 39391, 51280, 56408, 57296, 70510, 71620, 78782, 112816, 141020, 143240, 157564, 196955, 282040, 286480, 315128, 393910, 564080, 630256, 787820, 1575640, 2295421, 3151280, 4590842, 9181684, 11477105, 18363368, 22954210, 25249631, 36726736, 45908420, 50499262, 91816840, 100998524, 126248155, 183633680, 201997048, 252496310, 403994096, 504992620, 1009985240, 2019970480]

約数ペア:

[(1, 2019970480), (2, 1009985240), (4, 504992620), (5, 403994096), (8, 252496310), (10, 201997048), (11, 183633680), (16, 126248155), (20, 100998524), (22, 91816840), (40, 50499262), (44, 45908420), (55, 36726736), (80, 25249631), (88, 22954210), (110, 18363368), (176, 11477105), (220, 9181684), (440, 4590842), (641, 3151280), (880, 2295421), (1282, 1575640), (2564, 787820), (3205, 630256), (3581, 564080), (5128, 393910), (6410, 315128), (7051, 286480), (7162, 282040), (10256, 196955), (12820, 157564), (14102, 143240), (14324, 141020), (17905, 112816), (25640, 78782), (28204, 71620), (28648, 70510), (35255, 57296), (35810, 56408), (39391, 51280)]