12987760

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5237}}^1$

素因数の和:5281

約数の個数: 40

約数和(自身を含む): 31176576

約数和(自身を除く): 18188816

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 5237, 10474, 20948, 26185, 41896, 52370, 83792, 104740, 162347, 209480, 324694, 418960, 649388, 811735, 1298776, 1623470, 2597552, 3246940, 6493880, 12987760]

約数ペア:

[(1, 12987760), (2, 6493880), (4, 3246940), (5, 2597552), (8, 1623470), (10, 1298776), (16, 811735), (20, 649388), (31, 418960), (40, 324694), (62, 209480), (80, 162347), (124, 104740), (155, 83792), (248, 52370), (310, 41896), (496, 26185), (620, 20948), (1240, 10474), (2480, 5237)]