157780180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{4111}}^1$

素因数の和:4240

約数の個数: 48

約数和(自身を含む): 352316160

約数和(自身を除く): 194535980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 101, 190, 202, 380, 404, 505, 1010, 1919, 2020, 3838, 4111, 7676, 8222, 9595, 16444, 19190, 20555, 38380, 41110, 78109, 82220, 156218, 312436, 390545, 415211, 781090, 830422, 1562180, 1660844, 2076055, 4152110, 7889009, 8304220, 15778018, 31556036, 39445045, 78890090, 157780180]

約数ペア:

[(1, 157780180), (2, 78890090), (4, 39445045), (5, 31556036), (10, 15778018), (19, 8304220), (20, 7889009), (38, 4152110), (76, 2076055), (95, 1660844), (101, 1562180), (190, 830422), (202, 781090), (380, 415211), (404, 390545), (505, 312436), (1010, 156218), (1919, 82220), (2020, 78109), (3838, 41110), (4111, 38380), (7676, 20555), (8222, 19190), (9595, 16444)]