18179440

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{2011}}^1$

素因数の和:2137

約数の個数: 40

約数和(自身を含む): 42662448

約数和(自身を除く): 24483008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2011, 2260, 4022, 4520, 8044, 9040, 10055, 16088, 20110, 32176, 40220, 80440, 160880, 227243, 454486, 908972, 1136215, 1817944, 2272430, 3635888, 4544860, 9089720, 18179440]

約数ペア:

[(1, 18179440), (2, 9089720), (4, 4544860), (5, 3635888), (8, 2272430), (10, 1817944), (16, 1136215), (20, 908972), (40, 454486), (80, 227243), (113, 160880), (226, 80440), (452, 40220), (565, 32176), (904, 20110), (1130, 16088), (1808, 10055), (2011, 9040), (2260, 8044), (4022, 4520)]