404770840

素因数分解:

$2^3\times 5^1\times {\mathrm{769}}^1\times {\mathrm{13159}}^1$

素因数の和:13939

約数の個数: 32

約数和(自身を含む): 911988000

約数和(自身を除く): 507217160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 769, 1538, 3076, 3845, 6152, 7690, 13159, 15380, 26318, 30760, 52636, 65795, 105272, 131590, 263180, 526360, 10119271, 20238542, 40477084, 50596355, 80954168, 101192710, 202385420, 404770840]

約数ペア:

[(1, 404770840), (2, 202385420), (4, 101192710), (5, 80954168), (8, 50596355), (10, 40477084), (20, 20238542), (40, 10119271), (769, 526360), (1538, 263180), (3076, 131590), (3845, 105272), (6152, 65795), (7690, 52636), (13159, 30760), (15380, 26318)]