40323740

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 87272640

約数和(自身を除く): 46948900

約数列:

[1, 2, 4, 5, 10, 20, 71, 73, 142, 146, 284, 292, 355, 365, 389, 710, 730, 778, 1420, 1460, 1556, 1945, 3890, 5183, 7780, 10366, 20732, 25915, 27619, 28397, 51830, 55238, 56794, 103660, 110476, 113588, 138095, 141985, 276190, 283970, 552380, 567940, 2016187, 4032374, 8064748, 10080935, 20161870, 40323740]

約数ペア:

[(1, 40323740), (2, 20161870), (4, 10080935), (5, 8064748), (10, 4032374), (20, 2016187), (71, 567940), (73, 552380), (142, 283970), (146, 276190), (284, 141985), (292, 138095), (355, 113588), (365, 110476), (389, 103660), (710, 56794), (730, 55238), (778, 51830), (1420, 28397), (1460, 27619), (1556, 25915), (1945, 20732), (3890, 10366), (5183, 7780)]