13239640

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{3719}}^1$

素因数の和:3819

約数の個数: 32

約数和(自身を含む): 30132000

約数和(自身を除く): 16892360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 3719, 7438, 14876, 18595, 29752, 37190, 74380, 148760, 330991, 661982, 1323964, 1654955, 2647928, 3309910, 6619820, 13239640]

約数ペア:

[(1, 13239640), (2, 6619820), (4, 3309910), (5, 2647928), (8, 1654955), (10, 1323964), (20, 661982), (40, 330991), (89, 148760), (178, 74380), (356, 37190), (445, 29752), (712, 18595), (890, 14876), (1780, 7438), (3560, 3719)]