81631340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{4451}}^1$

素因数の和:4598

約数の個数: 48

約数和(自身を含む): 197455104

約数和(自身を除く): 115823764

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 1310, 1834, 2620, 3668, 4451, 4585, 8902, 9170, 17804, 18340, 22255, 31157, 44510, 62314, 89020, 124628, 155785, 311570, 583081, 623140, 1166162, 2332324, 2915405, 4081567, 5830810, 8163134, 11661620, 16326268, 20407835, 40815670, 81631340]

約数ペア:

[(1, 81631340), (2, 40815670), (4, 20407835), (5, 16326268), (7, 11661620), (10, 8163134), (14, 5830810), (20, 4081567), (28, 2915405), (35, 2332324), (70, 1166162), (131, 623140), (140, 583081), (262, 311570), (524, 155785), (655, 124628), (917, 89020), (1310, 62314), (1834, 44510), (2620, 31157), (3668, 22255), (4451, 18340), (4585, 17804), (8902, 9170)]