80991855

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1597}}^1$

素因数の和:1645

約数の個数: 72

約数和(自身を含む): 170512992

約数和(自身を除く): 89521137

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 35, 45, 49, 63, 69, 105, 115, 147, 161, 207, 245, 315, 345, 441, 483, 735, 805, 1035, 1127, 1449, 1597, 2205, 2415, 3381, 4791, 5635, 7245, 7985, 10143, 11179, 14373, 16905, 23955, 33537, 36731, 50715, 55895, 71865, 78253, 100611, 110193, 167685, 183655, 234759, 257117, 330579, 391265, 503055, 550965, 704277, 771351, 1173795, 1285585, 1652895, 1799819, 2314053, 3521385, 3856755, 5399457, 8999095, 11570265, 16198371, 26997285, 80991855]

約数ペア:

[(1, 80991855), (3, 26997285), (5, 16198371), (7, 11570265), (9, 8999095), (15, 5399457), (21, 3856755), (23, 3521385), (35, 2314053), (45, 1799819), (49, 1652895), (63, 1285585), (69, 1173795), (105, 771351), (115, 704277), (147, 550965), (161, 503055), (207, 391265), (245, 330579), (315, 257117), (345, 234759), (441, 183655), (483, 167685), (735, 110193), (805, 100611), (1035, 78253), (1127, 71865), (1449, 55895), (1597, 50715), (2205, 36731), (2415, 33537), (3381, 23955), (4791, 16905), (5635, 14373), (7245, 11179), (7985, 10143)]