12885640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5281}}^1$

素因数の和:5353

約数の個数: 32

約数和(自身を含む): 29473560

約数和(自身を除く): 16587920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 5281, 10562, 21124, 26405, 42248, 52810, 105620, 211240, 322141, 644282, 1288564, 1610705, 2577128, 3221410, 6442820, 12885640]

約数ペア:

[(1, 12885640), (2, 6442820), (4, 3221410), (5, 2577128), (8, 1610705), (10, 1288564), (20, 644282), (40, 322141), (61, 211240), (122, 105620), (244, 52810), (305, 42248), (488, 26405), (610, 21124), (1220, 10562), (2440, 5281)]