81261219052

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{360821}}^1$

素因数の和:360970

約数の個数: 48

約数和(自身を含む): 157849521984

約数和(自身を除く): 76588302932

約数列:

[1, 2, 4, 13, 26, 52, 61, 71, 122, 142, 244, 284, 793, 923, 1586, 1846, 3172, 3692, 4331, 8662, 17324, 56303, 112606, 225212, 360821, 721642, 1443284, 4690673, 9381346, 18762692, 22010081, 25618291, 44020162, 51236582, 88040324, 102473164, 286131053, 333037783, 572262106, 666075566, 1144524212, 1332151132, 1562715751, 3125431502, 6250863004, 20315304763, 40630609526, 81261219052]

約数ペア:

[(1, 81261219052), (2, 40630609526), (4, 20315304763), (13, 6250863004), (26, 3125431502), (52, 1562715751), (61, 1332151132), (71, 1144524212), (122, 666075566), (142, 572262106), (244, 333037783), (284, 286131053), (793, 102473164), (923, 88040324), (1586, 51236582), (1846, 44020162), (3172, 25618291), (3692, 22010081), (4331, 18762692), (8662, 9381346), (17324, 4690673), (56303, 1443284), (112606, 721642), (225212, 360821)]