211331380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{7457}}^1$

素因数の和:7588

約数の個数: 48

約数和(自身を含む): 482383440

約数和(自身を除く): 271052060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 1090, 1417, 2180, 2834, 5668, 7085, 7457, 14170, 14914, 28340, 29828, 37285, 74570, 96941, 149140, 193882, 387764, 484705, 812813, 969410, 1625626, 1938820, 3251252, 4064065, 8128130, 10566569, 16256260, 21133138, 42266276, 52832845, 105665690, 211331380]

約数ペア:

[(1, 211331380), (2, 105665690), (4, 52832845), (5, 42266276), (10, 21133138), (13, 16256260), (20, 10566569), (26, 8128130), (52, 4064065), (65, 3251252), (109, 1938820), (130, 1625626), (218, 969410), (260, 812813), (436, 484705), (545, 387764), (1090, 193882), (1417, 149140), (2180, 96941), (2834, 74570), (5668, 37285), (7085, 29828), (7457, 28340), (14170, 14914)]