399291208816

素因数分解:

$2^4\times {\mathrm{197}}^2\times {\mathrm{643039}}^1$

素因数の和:643441

約数の個数: 30

約数和(自身を含む): 777574899680

約数和(自身を除く): 378283690864

約数列:

[1, 2, 4, 8, 16, 197, 394, 788, 1576, 3152, 38809, 77618, 155236, 310472, 620944, 643039, 1286078, 2572156, 5144312, 10288624, 126678683, 253357366, 506714732, 1013429464, 2026858928, 24955700551, 49911401102, 99822802204, 199645604408, 399291208816]

約数ペア:

[(1, 399291208816), (2, 199645604408), (4, 99822802204), (8, 49911401102), (16, 24955700551), (197, 2026858928), (394, 1013429464), (788, 506714732), (1576, 253357366), (3152, 126678683), (38809, 10288624), (77618, 5144312), (155236, 2572156), (310472, 1286078), (620944, 643039)]