81781630

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{7841}}^1$

素因数の和:8004

約数の個数: 32

約数和(自身を含む): 169387200

約数和(自身を除く): 87605570

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 149, 298, 745, 1043, 1490, 2086, 5215, 7841, 10430, 15682, 39205, 54887, 78410, 109774, 274435, 548870, 1168309, 2336618, 5841545, 8178163, 11683090, 16356326, 40890815, 81781630]

約数ペア:

[(1, 81781630), (2, 40890815), (5, 16356326), (7, 11683090), (10, 8178163), (14, 5841545), (35, 2336618), (70, 1168309), (149, 548870), (298, 274435), (745, 109774), (1043, 78410), (1490, 54887), (2086, 39205), (5215, 15682), (7841, 10430)]