20179963640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{165247}}^1$

素因数の和:165372

約数の個数: 64

約数和(自身を含む): 47115509760

約数和(自身を除く): 26935546120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 71, 86, 142, 172, 215, 284, 344, 355, 430, 568, 710, 860, 1420, 1720, 2840, 3053, 6106, 12212, 15265, 24424, 30530, 61060, 122120, 165247, 330494, 660988, 826235, 1321976, 1652470, 3304940, 6609880, 7105621, 11732537, 14211242, 23465074, 28422484, 35528105, 46930148, 56844968, 58662685, 71056210, 93860296, 117325370, 142112420, 234650740, 284224840, 469301480, 504499091, 1008998182, 2017996364, 2522495455, 4035992728, 5044990910, 10089981820, 20179963640]

約数ペア:

[(1, 20179963640), (2, 10089981820), (4, 5044990910), (5, 4035992728), (8, 2522495455), (10, 2017996364), (20, 1008998182), (40, 504499091), (43, 469301480), (71, 284224840), (86, 234650740), (142, 142112420), (172, 117325370), (215, 93860296), (284, 71056210), (344, 58662685), (355, 56844968), (430, 46930148), (568, 35528105), (710, 28422484), (860, 23465074), (1420, 14211242), (1720, 11732537), (2840, 7105621), (3053, 6609880), (6106, 3304940), (12212, 1652470), (15265, 1321976), (24424, 826235), (30530, 660988), (61060, 330494), (122120, 165247)]