388582640

素因数分解:

$2^4\times 5^1\times {\mathrm{521}}^1\times {\mathrm{9323}}^1$

素因数の和:9857

約数の個数: 40

約数和(自身を含む): 905285808

約数和(自身を除く): 516703168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 521, 1042, 2084, 2605, 4168, 5210, 8336, 9323, 10420, 18646, 20840, 37292, 41680, 46615, 74584, 93230, 149168, 186460, 372920, 745840, 4857283, 9714566, 19429132, 24286415, 38858264, 48572830, 77716528, 97145660, 194291320, 388582640]

約数ペア:

[(1, 388582640), (2, 194291320), (4, 97145660), (5, 77716528), (8, 48572830), (10, 38858264), (16, 24286415), (20, 19429132), (40, 9714566), (80, 4857283), (521, 745840), (1042, 372920), (2084, 186460), (2605, 149168), (4168, 93230), (5210, 74584), (8336, 46615), (9323, 41680), (10420, 37292), (18646, 20840)]