81361742

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:297

約数の個数: 64

約数和(自身を含む): 158906880

約数和(自身を除く): 77545138

約数列:

[1, 2, 7, 11, 14, 22, 37, 74, 77, 109, 131, 154, 218, 259, 262, 407, 518, 763, 814, 917, 1199, 1441, 1526, 1834, 2398, 2849, 2882, 4033, 4847, 5698, 8066, 8393, 9694, 10087, 14279, 16786, 20174, 28231, 28558, 33929, 44363, 53317, 56462, 67858, 88726, 99953, 106634, 157069, 199906, 310541, 314138, 373219, 528323, 621082, 746438, 1056646, 1099483, 2198966, 3698261, 5811553, 7396522, 11623106, 40680871, 81361742]

約数ペア:

[(1, 81361742), (2, 40680871), (7, 11623106), (11, 7396522), (14, 5811553), (22, 3698261), (37, 2198966), (74, 1099483), (77, 1056646), (109, 746438), (131, 621082), (154, 528323), (218, 373219), (259, 314138), (262, 310541), (407, 199906), (518, 157069), (763, 106634), (814, 99953), (917, 88726), (1199, 67858), (1441, 56462), (1526, 53317), (1834, 44363), (2398, 33929), (2849, 28558), (2882, 28231), (4033, 20174), (4847, 16786), (5698, 14279), (8066, 10087), (8393, 9694)]