220647

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1$

素因数の和:115

約数の個数: 24

約数和(自身を含む): 364800

約数和(自身を除く): 144153

約数列:

[1, 3, 7, 19, 21, 49, 57, 79, 133, 147, 237, 399, 553, 931, 1501, 1659, 2793, 3871, 4503, 10507, 11613, 31521, 73549, 220647]

約数ペア:

[(1, 220647), (3, 73549), (7, 31521), (19, 11613), (21, 10507), (49, 4503), (57, 3871), (79, 2793), (133, 1659), (147, 1501), (237, 931), (399, 553)]