221981921

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{859}}^1$

素因数の和:981

約数の個数: 32

約数和(自身を含む): 280704000

約数和(自身を除く): 58722079

約数列:

[1, 7, 19, 29, 67, 133, 203, 469, 551, 859, 1273, 1943, 3857, 6013, 8911, 13601, 16321, 24911, 36917, 57553, 114247, 174377, 258419, 402871, 473309, 1093507, 1669037, 3313163, 7654549, 11683259, 31711703, 221981921]

約数ペア:

[(1, 221981921), (7, 31711703), (19, 11683259), (29, 7654549), (67, 3313163), (133, 1669037), (203, 1093507), (469, 473309), (551, 402871), (859, 258419), (1273, 174377), (1943, 114247), (3857, 57553), (6013, 36917), (8911, 24911), (13601, 16321)]