1277153960

素因数分解:

$2^3\times 5^1\times {\mathrm{5431}}^1\times {\mathrm{5879}}^1$

素因数の和:11321

約数の個数: 32

約数和(自身を含む): 2874614400

約数和(自身を除く): 1597460440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5431, 5879, 10862, 11758, 21724, 23516, 27155, 29395, 43448, 47032, 54310, 58790, 108620, 117580, 217240, 235160, 31928849, 63857698, 127715396, 159644245, 255430792, 319288490, 638576980, 1277153960]

約数ペア:

[(1, 1277153960), (2, 638576980), (4, 319288490), (5, 255430792), (8, 159644245), (10, 127715396), (20, 63857698), (40, 31928849), (5431, 235160), (5879, 217240), (10862, 117580), (11758, 108620), (21724, 58790), (23516, 54310), (27155, 47032), (29395, 43448)]