320659820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{509}}^1\times {\mathrm{2423}}^1$

素因数の和:2954

約数の個数: 48

約数和(自身を含む): 726909120

約数和(自身を除く): 406249300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 509, 1018, 2036, 2423, 2545, 4846, 5090, 6617, 9692, 10180, 12115, 13234, 24230, 26468, 31499, 33085, 48460, 62998, 66170, 125996, 132340, 157495, 314990, 629980, 1233307, 2466614, 4933228, 6166535, 12333070, 16032991, 24666140, 32065982, 64131964, 80164955, 160329910, 320659820]

約数ペア:

[(1, 320659820), (2, 160329910), (4, 80164955), (5, 64131964), (10, 32065982), (13, 24666140), (20, 16032991), (26, 12333070), (52, 6166535), (65, 4933228), (130, 2466614), (260, 1233307), (509, 629980), (1018, 314990), (2036, 157495), (2423, 132340), (2545, 125996), (4846, 66170), (5090, 62998), (6617, 48460), (9692, 33085), (10180, 31499), (12115, 26468), (13234, 24230)]