81391970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{18047}}^1$

素因数の和:18106

約数の個数: 32

約数和(自身を含む): 163731456

約数和(自身を除く): 82339486

約数列:

[1, 2, 5, 10, 11, 22, 41, 55, 82, 110, 205, 410, 451, 902, 2255, 4510, 18047, 36094, 90235, 180470, 198517, 397034, 739927, 992585, 1479854, 1985170, 3699635, 7399270, 8139197, 16278394, 40695985, 81391970]

約数ペア:

[(1, 81391970), (2, 40695985), (5, 16278394), (10, 8139197), (11, 7399270), (22, 3699635), (41, 1985170), (55, 1479854), (82, 992585), (110, 739927), (205, 397034), (410, 198517), (451, 180470), (902, 90235), (2255, 36094), (4510, 18047)]