81906195

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{2371}}^1$

素因数の和:2440

約数の個数: 48

約数和(自身を含む): 155755008

約数和(自身を除く): 73848813

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 49, 105, 141, 147, 235, 245, 329, 705, 735, 987, 1645, 2303, 2371, 4935, 6909, 7113, 11515, 11855, 16597, 34545, 35565, 49791, 82985, 111437, 116179, 248955, 334311, 348537, 557185, 580895, 780059, 1671555, 1742685, 2340177, 3900295, 5460413, 11700885, 16381239, 27302065, 81906195]

約数ペア:

[(1, 81906195), (3, 27302065), (5, 16381239), (7, 11700885), (15, 5460413), (21, 3900295), (35, 2340177), (47, 1742685), (49, 1671555), (105, 780059), (141, 580895), (147, 557185), (235, 348537), (245, 334311), (329, 248955), (705, 116179), (735, 111437), (987, 82985), (1645, 49791), (2303, 35565), (2371, 34545), (4935, 16597), (6909, 11855), (7113, 11515)]