779889920

素因数分解:

$2^8\times 5^1\times {\mathrm{609289}}^1$

素因数の和:609310

約数の個数: 36

約数和(自身を含む): 1868083140

約数和(自身を除く): 1088193220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 609289, 1218578, 2437156, 3046445, 4874312, 6092890, 9748624, 12185780, 19497248, 24371560, 38994496, 48743120, 77988992, 97486240, 155977984, 194972480, 389944960, 779889920]

約数ペア:

[(1, 779889920), (2, 389944960), (4, 194972480), (5, 155977984), (8, 97486240), (10, 77988992), (16, 48743120), (20, 38994496), (32, 24371560), (40, 19497248), (64, 12185780), (80, 9748624), (128, 6092890), (160, 4874312), (256, 3046445), (320, 2437156), (640, 1218578), (1280, 609289)]