816071780

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{373}}^1\times {\mathrm{787}}^1$

素因数の和:1308

約数の個数: 48

約数和(自身を含む): 1732906560

約数和(自身を除く): 916834780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 373, 556, 695, 746, 787, 1390, 1492, 1574, 1865, 2780, 3148, 3730, 3935, 7460, 7870, 15740, 51847, 103694, 109393, 207388, 218786, 259235, 293551, 437572, 518470, 546965, 587102, 1036940, 1093930, 1174204, 1467755, 2187860, 2935510, 5871020, 40803589, 81607178, 163214356, 204017945, 408035890, 816071780]

約数ペア:

[(1, 816071780), (2, 408035890), (4, 204017945), (5, 163214356), (10, 81607178), (20, 40803589), (139, 5871020), (278, 2935510), (373, 2187860), (556, 1467755), (695, 1174204), (746, 1093930), (787, 1036940), (1390, 587102), (1492, 546965), (1574, 518470), (1865, 437572), (2780, 293551), (3148, 259235), (3730, 218786), (3935, 207388), (7460, 109393), (7870, 103694), (15740, 51847)]