81281628

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{421}}^1$

素因数の和:635

約数の個数: 72

約数和(自身を含む): 213822336

約数和(自身を除く): 132540708

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 93, 124, 173, 186, 279, 346, 372, 421, 519, 558, 692, 842, 1038, 1116, 1263, 1557, 1684, 2076, 2526, 3114, 3789, 5052, 5363, 6228, 7578, 10726, 13051, 15156, 16089, 21452, 26102, 32178, 39153, 48267, 52204, 64356, 72833, 78306, 96534, 117459, 145666, 156612, 193068, 218499, 234918, 291332, 436998, 469836, 655497, 873996, 1310994, 2257823, 2621988, 4515646, 6773469, 9031292, 13546938, 20320407, 27093876, 40640814, 81281628]

約数ペア:

[(1, 81281628), (2, 40640814), (3, 27093876), (4, 20320407), (6, 13546938), (9, 9031292), (12, 6773469), (18, 4515646), (31, 2621988), (36, 2257823), (62, 1310994), (93, 873996), (124, 655497), (173, 469836), (186, 436998), (279, 291332), (346, 234918), (372, 218499), (421, 193068), (519, 156612), (558, 145666), (692, 117459), (842, 96534), (1038, 78306), (1116, 72833), (1263, 64356), (1557, 52204), (1684, 48267), (2076, 39153), (2526, 32178), (3114, 26102), (3789, 21452), (5052, 16089), (5363, 15156), (6228, 13051), (7578, 10726)]