20012517

素因数分解:

$3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{4021}}^1$

素因数の和:4113

約数の個数: 24

約数和(自身を含む): 33463040

約数和(自身を除く): 13450523

約数列:

[1, 3, 7, 9, 21, 63, 79, 237, 553, 711, 1659, 4021, 4977, 12063, 28147, 36189, 84441, 253323, 317659, 952977, 2223613, 2858931, 6670839, 20012517]

約数ペア:

[(1, 20012517), (3, 6670839), (7, 2858931), (9, 2223613), (21, 952977), (63, 317659), (79, 253323), (237, 84441), (553, 36189), (711, 28147), (1659, 12063), (4021, 4977)]