638488210

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{34457}}^1$

素因数の和:34590

約数の個数: 32

約数和(自身を含む): 1228083120

約数和(自身を除く): 589594910

約数列:

[1, 2, 5, 10, 17, 34, 85, 109, 170, 218, 545, 1090, 1853, 3706, 9265, 18530, 34457, 68914, 172285, 344570, 585769, 1171538, 2928845, 3755813, 5857690, 7511626, 18779065, 37558130, 63848821, 127697642, 319244105, 638488210]

約数ペア:

[(1, 638488210), (2, 319244105), (5, 127697642), (10, 63848821), (17, 37558130), (34, 18779065), (85, 7511626), (109, 5857690), (170, 3755813), (218, 2928845), (545, 1171538), (1090, 585769), (1853, 344570), (3706, 172285), (9265, 68914), (18530, 34457)]