18643420

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{13913}}^1$

素因数の和:13989

約数の個数: 24

約数和(自身を含む): 39738384

約数和(自身を除く): 21094964

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 13913, 27826, 55652, 69565, 139130, 278260, 932171, 1864342, 3728684, 4660855, 9321710, 18643420]

約数ペア:

[(1, 18643420), (2, 9321710), (4, 4660855), (5, 3728684), (10, 1864342), (20, 932171), (67, 278260), (134, 139130), (268, 69565), (335, 55652), (670, 27826), (1340, 13913)]