20002563

素因数分解:

$3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{4019}}^1$

素因数の和:4111

約数の個数: 24

約数和(自身を含む): 33446400

約数和(自身を除く): 13443837

約数列:

[1, 3, 7, 9, 21, 63, 79, 237, 553, 711, 1659, 4019, 4977, 12057, 28133, 36171, 84399, 253197, 317501, 952503, 2222507, 2857509, 6667521, 20002563]

約数ペア:

[(1, 20002563), (3, 6667521), (7, 2857509), (9, 2222507), (21, 952503), (63, 317501), (79, 253197), (237, 84399), (553, 36171), (711, 28133), (1659, 12057), (4019, 4977)]