21561428

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{40529}}^1$

素因数の和:40559

約数の個数: 24

約数和(自身を含む): 45393600

約数和(自身を除く): 23832172

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 40529, 81058, 162116, 283703, 567406, 770051, 1134812, 1540102, 3080204, 5390357, 10780714, 21561428]

約数ペア:

[(1, 21561428), (2, 10780714), (4, 5390357), (7, 3080204), (14, 1540102), (19, 1134812), (28, 770051), (38, 567406), (76, 283703), (133, 162116), (266, 81058), (532, 40529)]