20717672

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{601}}^1$

素因数の和:777

約数の個数: 32

約数和(自身を含む): 40454400

約数和(自身を除く): 19736728

約数列:

[1, 2, 4, 8, 31, 62, 124, 139, 248, 278, 556, 601, 1112, 1202, 2404, 4309, 4808, 8618, 17236, 18631, 34472, 37262, 74524, 83539, 149048, 167078, 334156, 668312, 2589709, 5179418, 10358836, 20717672]

約数ペア:

[(1, 20717672), (2, 10358836), (4, 5179418), (8, 2589709), (31, 668312), (62, 334156), (124, 167078), (139, 149048), (248, 83539), (278, 74524), (556, 37262), (601, 34472), (1112, 18631), (1202, 17236), (2404, 8618), (4309, 4808)]