21476428

素因数分解:

$2^2\times {\mathrm{31}}^2\times {\mathrm{37}}^1\times {\mathrm{151}}^1$

素因数の和:254

約数の個数: 36

約数和(自身を含む): 40148976

約数和(自身を除く): 18672548

約数列:

[1, 2, 4, 31, 37, 62, 74, 124, 148, 151, 302, 604, 961, 1147, 1922, 2294, 3844, 4588, 4681, 5587, 9362, 11174, 18724, 22348, 35557, 71114, 142228, 145111, 173197, 290222, 346394, 580444, 692788, 5369107, 10738214, 21476428]

約数ペア:

[(1, 21476428), (2, 10738214), (4, 5369107), (31, 692788), (37, 580444), (62, 346394), (74, 290222), (124, 173197), (148, 145111), (151, 142228), (302, 71114), (604, 35557), (961, 22348), (1147, 18724), (1922, 11174), (2294, 9362), (3844, 5587), (4588, 4681)]