12900880

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1231}}^1$

素因数の和:1375

約数の個数: 40

約数和(自身を含む): 30248064

約数和(自身を除く): 17347184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1231, 1310, 2096, 2462, 2620, 4924, 5240, 6155, 9848, 10480, 12310, 19696, 24620, 49240, 98480, 161261, 322522, 645044, 806305, 1290088, 1612610, 2580176, 3225220, 6450440, 12900880]

約数ペア:

[(1, 12900880), (2, 6450440), (4, 3225220), (5, 2580176), (8, 1612610), (10, 1290088), (16, 806305), (20, 645044), (40, 322522), (80, 161261), (131, 98480), (262, 49240), (524, 24620), (655, 19696), (1048, 12310), (1231, 10480), (1310, 9848), (2096, 6155), (2462, 5240), (2620, 4924)]