40452620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{991}}^1$

素因数の和:1170

約数の個数: 48

約数和(自身を含む): 92160768

約数和(自身を除く): 51708148

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 157, 260, 314, 628, 785, 991, 1570, 1982, 2041, 3140, 3964, 4082, 4955, 8164, 9910, 10205, 12883, 19820, 20410, 25766, 40820, 51532, 64415, 128830, 155587, 257660, 311174, 622348, 777935, 1555870, 2022631, 3111740, 4045262, 8090524, 10113155, 20226310, 40452620]

約数ペア:

[(1, 40452620), (2, 20226310), (4, 10113155), (5, 8090524), (10, 4045262), (13, 3111740), (20, 2022631), (26, 1555870), (52, 777935), (65, 622348), (130, 311174), (157, 257660), (260, 155587), (314, 128830), (628, 64415), (785, 51532), (991, 40820), (1570, 25766), (1982, 20410), (2041, 19820), (3140, 12883), (3964, 10205), (4082, 9910), (4955, 8164)]