21391956

素因数分解:

$2^2\times 3^2\times {\mathrm{47}}^2\times {\mathrm{269}}^1$

素因数の和:373

約数の個数: 54

約数和(自身を含む): 55454490

約数和(自身を除く): 34062534

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 47, 94, 141, 188, 269, 282, 423, 538, 564, 807, 846, 1076, 1614, 1692, 2209, 2421, 3228, 4418, 4842, 6627, 8836, 9684, 12643, 13254, 19881, 25286, 26508, 37929, 39762, 50572, 75858, 79524, 113787, 151716, 227574, 455148, 594221, 1188442, 1782663, 2376884, 3565326, 5347989, 7130652, 10695978, 21391956]

約数ペア:

[(1, 21391956), (2, 10695978), (3, 7130652), (4, 5347989), (6, 3565326), (9, 2376884), (12, 1782663), (18, 1188442), (36, 594221), (47, 455148), (94, 227574), (141, 151716), (188, 113787), (269, 79524), (282, 75858), (423, 50572), (538, 39762), (564, 37929), (807, 26508), (846, 25286), (1076, 19881), (1614, 13254), (1692, 12643), (2209, 9684), (2421, 8836), (3228, 6627), (4418, 4842)]