261621820

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{8623}}^1$

素因数の和:8710

約数の個数: 48

約数和(自身を含む): 578083968

約数和(自身を除く): 316462148

約数列:

[1, 2, 4, 5, 10, 20, 37, 41, 74, 82, 148, 164, 185, 205, 370, 410, 740, 820, 1517, 3034, 6068, 7585, 8623, 15170, 17246, 30340, 34492, 43115, 86230, 172460, 319051, 353543, 638102, 707086, 1276204, 1414172, 1595255, 1767715, 3190510, 3535430, 6381020, 7070860, 13081091, 26162182, 52324364, 65405455, 130810910, 261621820]

約数ペア:

[(1, 261621820), (2, 130810910), (4, 65405455), (5, 52324364), (10, 26162182), (20, 13081091), (37, 7070860), (41, 6381020), (74, 3535430), (82, 3190510), (148, 1767715), (164, 1595255), (185, 1414172), (205, 1276204), (370, 707086), (410, 638102), (740, 353543), (820, 319051), (1517, 172460), (3034, 86230), (6068, 43115), (7585, 34492), (8623, 30340), (15170, 17246)]