21998998

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{433}}^1$

素因数の和:652

約数の個数: 32

約数和(自身を含む): 39997440

約数和(自身を除く): 17998442

約数列:

[1, 2, 7, 14, 19, 38, 133, 191, 266, 382, 433, 866, 1337, 2674, 3031, 3629, 6062, 7258, 8227, 16454, 25403, 50806, 57589, 82703, 115178, 165406, 578921, 1157842, 1571357, 3142714, 10999499, 21998998]

約数ペア:

[(1, 21998998), (2, 10999499), (7, 3142714), (14, 1571357), (19, 1157842), (38, 578921), (133, 165406), (191, 115178), (266, 82703), (382, 57589), (433, 50806), (866, 25403), (1337, 16454), (2674, 8227), (3031, 7258), (3629, 6062)]