388611280

素因数分解:

$2^4\times 5^1\times {\mathrm{617}}^1\times {\mathrm{7873}}^1$

素因数の和:8503

約数の個数: 40

約数和(自身を含む): 905100552

約数和(自身を除く): 516489272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 617, 1234, 2468, 3085, 4936, 6170, 7873, 9872, 12340, 15746, 24680, 31492, 39365, 49360, 62984, 78730, 125968, 157460, 314920, 629840, 4857641, 9715282, 19430564, 24288205, 38861128, 48576410, 77722256, 97152820, 194305640, 388611280]

約数ペア:

[(1, 388611280), (2, 194305640), (4, 97152820), (5, 77722256), (8, 48576410), (10, 38861128), (16, 24288205), (20, 19430564), (40, 9715282), (80, 4857641), (617, 629840), (1234, 314920), (2468, 157460), (3085, 125968), (4936, 78730), (6170, 62984), (7873, 49360), (9872, 39365), (12340, 31492), (15746, 24680)]