80456920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{661}}^1$

素因数の和:868

約数の個数: 64

約数和(自身を含む): 193039200

約数和(自身を除く): 112582280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 179, 340, 358, 661, 680, 716, 895, 1322, 1432, 1790, 2644, 3043, 3305, 3580, 5288, 6086, 6610, 7160, 11237, 12172, 13220, 15215, 22474, 24344, 26440, 30430, 44948, 56185, 60860, 89896, 112370, 118319, 121720, 224740, 236638, 449480, 473276, 591595, 946552, 1183190, 2011423, 2366380, 4022846, 4732760, 8045692, 10057115, 16091384, 20114230, 40228460, 80456920]

約数ペア:

[(1, 80456920), (2, 40228460), (4, 20114230), (5, 16091384), (8, 10057115), (10, 8045692), (17, 4732760), (20, 4022846), (34, 2366380), (40, 2011423), (68, 1183190), (85, 946552), (136, 591595), (170, 473276), (179, 449480), (340, 236638), (358, 224740), (661, 121720), (680, 118319), (716, 112370), (895, 89896), (1322, 60860), (1432, 56185), (1790, 44948), (2644, 30430), (3043, 26440), (3305, 24344), (3580, 22474), (5288, 15215), (6086, 13220), (6610, 12172), (7160, 11237)]