664448980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{6373}}^1$

素因数の和:6796

約数の個数: 48

約数和(自身を含む): 1506660624

約数和(自身を除く): 842211644

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 401, 802, 1604, 2005, 4010, 5213, 6373, 8020, 10426, 12746, 20852, 25492, 26065, 31865, 52130, 63730, 82849, 104260, 127460, 165698, 331396, 414245, 828490, 1656980, 2555573, 5111146, 10222292, 12777865, 25555730, 33222449, 51111460, 66444898, 132889796, 166112245, 332224490, 664448980]

約数ペア:

[(1, 664448980), (2, 332224490), (4, 166112245), (5, 132889796), (10, 66444898), (13, 51111460), (20, 33222449), (26, 25555730), (52, 12777865), (65, 10222292), (130, 5111146), (260, 2555573), (401, 1656980), (802, 828490), (1604, 414245), (2005, 331396), (4010, 165698), (5213, 127460), (6373, 104260), (8020, 82849), (10426, 63730), (12746, 52130), (20852, 31865), (25492, 26065)]