691860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{887}}^1$

素因数の和:912

約数の個数: 48

約数和(自身を含む): 2088576

約数和(自身を除く): 1396716

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 887, 1774, 2661, 3548, 4435, 5322, 8870, 10644, 11531, 13305, 17740, 23062, 26610, 34593, 46124, 53220, 57655, 69186, 115310, 138372, 172965, 230620, 345930, 691860]

約数ペア:

[(1, 691860), (2, 345930), (3, 230620), (4, 172965), (5, 138372), (6, 115310), (10, 69186), (12, 57655), (13, 53220), (15, 46124), (20, 34593), (26, 26610), (30, 23062), (39, 17740), (52, 13305), (60, 11531), (65, 10644), (78, 8870), (130, 5322), (156, 4435), (195, 3548), (260, 2661), (390, 1774), (780, 887)]