1406793980

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{643}}^1\times {\mathrm{787}}^1$

素因数の和:1578

約数の個数: 48

約数和(自身を含む): 2983935360

約数和(自身を除く): 1577141380

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 643, 695, 787, 1286, 1390, 1574, 2572, 2780, 3148, 3215, 3935, 6430, 7870, 12860, 15740, 89377, 109393, 178754, 218786, 357508, 437572, 446885, 506041, 546965, 893770, 1012082, 1093930, 1787540, 2024164, 2187860, 2530205, 5060410, 10120820, 70339699, 140679398, 281358796, 351698495, 703396990, 1406793980]

約数ペア:

[(1, 1406793980), (2, 703396990), (4, 351698495), (5, 281358796), (10, 140679398), (20, 70339699), (139, 10120820), (278, 5060410), (556, 2530205), (643, 2187860), (695, 2024164), (787, 1787540), (1286, 1093930), (1390, 1012082), (1574, 893770), (2572, 546965), (2780, 506041), (3148, 446885), (3215, 437572), (3935, 357508), (6430, 218786), (7870, 178754), (12860, 109393), (15740, 89377)]