39991984

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{80629}}^1$

素因数の和:80668

約数の個数: 20

約数和(自身を含む): 79984960

約数和(自身を除く): 39992976

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 80629, 161258, 322516, 645032, 1290064, 2499499, 4998998, 9997996, 19995992, 39991984]

約数ペア:

[(1, 39991984), (2, 19995992), (4, 9997996), (8, 4998998), (16, 2499499), (31, 1290064), (62, 645032), (124, 322516), (248, 161258), (496, 80629)]