81290990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{769}}^1$

素因数の和:849

約数の個数: 48

約数和(自身を含む): 165155760

約数和(自身を除く): 83864770

約数列:

[1, 2, 5, 10, 11, 22, 31, 55, 62, 110, 155, 310, 341, 682, 769, 961, 1538, 1705, 1922, 3410, 3845, 4805, 7690, 8459, 9610, 10571, 16918, 21142, 23839, 42295, 47678, 52855, 84590, 105710, 119195, 238390, 262229, 524458, 739009, 1311145, 1478018, 2622290, 3695045, 7390090, 8129099, 16258198, 40645495, 81290990]

約数ペア:

[(1, 81290990), (2, 40645495), (5, 16258198), (10, 8129099), (11, 7390090), (22, 3695045), (31, 2622290), (55, 1478018), (62, 1311145), (110, 739009), (155, 524458), (310, 262229), (341, 238390), (682, 119195), (769, 105710), (961, 84590), (1538, 52855), (1705, 47678), (1922, 42295), (3410, 23839), (3845, 21142), (4805, 16918), (7690, 10571), (8459, 9610)]