20456984

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{349}}^1\times {\mathrm{431}}^1$

素因数の和:803

約数の個数: 32

約数和(自身を含む): 40824000

約数和(自身を除く): 20367016

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 349, 431, 698, 862, 1396, 1724, 2792, 3448, 5933, 7327, 11866, 14654, 23732, 29308, 47464, 58616, 150419, 300838, 601676, 1203352, 2557123, 5114246, 10228492, 20456984]

約数ペア:

[(1, 20456984), (2, 10228492), (4, 5114246), (8, 2557123), (17, 1203352), (34, 601676), (68, 300838), (136, 150419), (349, 58616), (431, 47464), (698, 29308), (862, 23732), (1396, 14654), (1724, 11866), (2792, 7327), (3448, 5933)]