20121309128

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{541}}^1\times {\mathrm{149971}}^1$

素因数の和:150549

約数の個数: 32

約数和(自身を含む): 39016715520

約数和(自身を除く): 18895406392

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 541, 1082, 2164, 4328, 16771, 33542, 67084, 134168, 149971, 299942, 599884, 1199768, 4649101, 9298202, 18596404, 37192808, 81134311, 162268622, 324537244, 649074488, 2515163641, 5030327282, 10060654564, 20121309128]

約数ペア:

[(1, 20121309128), (2, 10060654564), (4, 5030327282), (8, 2515163641), (31, 649074488), (62, 324537244), (124, 162268622), (248, 81134311), (541, 37192808), (1082, 18596404), (2164, 9298202), (4328, 4649101), (16771, 1199768), (33542, 599884), (67084, 299942), (134168, 149971)]