21196791

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{419}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 38787840

約数和(自身を除く): 17591049

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 73, 77, 99, 219, 231, 419, 511, 657, 693, 803, 1257, 1533, 2409, 2933, 3771, 4599, 4609, 5621, 7227, 8799, 13827, 16863, 26397, 30587, 32263, 41481, 50589, 91761, 96789, 214109, 275283, 290367, 336457, 642327, 1009371, 1926981, 2355199, 3028113, 7065597, 21196791]

約数ペア:

[(1, 21196791), (3, 7065597), (7, 3028113), (9, 2355199), (11, 1926981), (21, 1009371), (33, 642327), (63, 336457), (73, 290367), (77, 275283), (99, 214109), (219, 96789), (231, 91761), (419, 50589), (511, 41481), (657, 32263), (693, 30587), (803, 26397), (1257, 16863), (1533, 13827), (2409, 8799), (2933, 7227), (3771, 5621), (4599, 4609)]