80216840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{5881}}^1$

素因数の和:5934

約数の個数: 64

約数和(自身を含む): 203281920

約数和(自身を除く): 123065080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1705, 2728, 3410, 5881, 6820, 11762, 13640, 23524, 29405, 47048, 58810, 64691, 117620, 129382, 182311, 235240, 258764, 323455, 364622, 517528, 646910, 729244, 911555, 1293820, 1458488, 1823110, 2005421, 2587640, 3646220, 4010842, 7292440, 8021684, 10027105, 16043368, 20054210, 40108420, 80216840]

約数ペア:

[(1, 80216840), (2, 40108420), (4, 20054210), (5, 16043368), (8, 10027105), (10, 8021684), (11, 7292440), (20, 4010842), (22, 3646220), (31, 2587640), (40, 2005421), (44, 1823110), (55, 1458488), (62, 1293820), (88, 911555), (110, 729244), (124, 646910), (155, 517528), (220, 364622), (248, 323455), (310, 258764), (341, 235240), (440, 182311), (620, 129382), (682, 117620), (1240, 64691), (1364, 58810), (1705, 47048), (2728, 29405), (3410, 23524), (5881, 13640), (6820, 11762)]