81170388

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{691}}^1$

素因数の和:965

約数の個数: 72

約数和(自身を含む): 222165216

約数和(自身を除く): 140994828

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 251, 468, 502, 691, 753, 1004, 1382, 1506, 2073, 2259, 2764, 3012, 3263, 4146, 4518, 6219, 6526, 8292, 8983, 9036, 9789, 12438, 13052, 17966, 19578, 24876, 26949, 29367, 35932, 39156, 53898, 58734, 80847, 107796, 117468, 161694, 173441, 323388, 346882, 520323, 693764, 1040646, 1560969, 2081292, 2254733, 3121938, 4509466, 6243876, 6764199, 9018932, 13528398, 20292597, 27056796, 40585194, 81170388]

約数ペア:

[(1, 81170388), (2, 40585194), (3, 27056796), (4, 20292597), (6, 13528398), (9, 9018932), (12, 6764199), (13, 6243876), (18, 4509466), (26, 3121938), (36, 2254733), (39, 2081292), (52, 1560969), (78, 1040646), (117, 693764), (156, 520323), (234, 346882), (251, 323388), (468, 173441), (502, 161694), (691, 117468), (753, 107796), (1004, 80847), (1382, 58734), (1506, 53898), (2073, 39156), (2259, 35932), (2764, 29367), (3012, 26949), (3263, 24876), (4146, 19578), (4518, 17966), (6219, 13052), (6526, 12438), (8292, 9789), (8983, 9036)]