31509980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{821}}^1$

素因数の和:950

約数の個数: 48

約数和(自身を含む): 70428960

約数和(自身を除く): 38918980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 101, 190, 202, 380, 404, 505, 821, 1010, 1642, 1919, 2020, 3284, 3838, 4105, 7676, 8210, 9595, 15599, 16420, 19190, 31198, 38380, 62396, 77995, 82921, 155990, 165842, 311980, 331684, 414605, 829210, 1575499, 1658420, 3150998, 6301996, 7877495, 15754990, 31509980]

約数ペア:

[(1, 31509980), (2, 15754990), (4, 7877495), (5, 6301996), (10, 3150998), (19, 1658420), (20, 1575499), (38, 829210), (76, 414605), (95, 331684), (101, 311980), (190, 165842), (202, 155990), (380, 82921), (404, 77995), (505, 62396), (821, 38380), (1010, 31198), (1642, 19190), (1919, 16420), (2020, 15599), (3284, 9595), (3838, 8210), (4105, 7676)]