80486380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{887}}^1$

素因数の和:1258

約数の個数: 48

約数和(自身を含む): 182750400

約数和(自身を除く): 102264020

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 349, 698, 887, 1396, 1745, 1774, 3490, 3548, 4435, 4537, 6980, 8870, 9074, 11531, 17740, 18148, 22685, 23062, 45370, 46124, 57655, 90740, 115310, 230620, 309563, 619126, 1238252, 1547815, 3095630, 4024319, 6191260, 8048638, 16097276, 20121595, 40243190, 80486380]

約数ペア:

[(1, 80486380), (2, 40243190), (4, 20121595), (5, 16097276), (10, 8048638), (13, 6191260), (20, 4024319), (26, 3095630), (52, 1547815), (65, 1238252), (130, 619126), (260, 309563), (349, 230620), (698, 115310), (887, 90740), (1396, 57655), (1745, 46124), (1774, 45370), (3490, 23062), (3548, 22685), (4435, 18148), (4537, 17740), (6980, 11531), (8870, 9074)]