20074840

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5639}}^1$

素因数の和:5739

約数の個数: 32

約数和(自身を含む): 45684000

約数和(自身を除く): 25609160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5639, 11278, 22556, 28195, 45112, 56390, 112780, 225560, 501871, 1003742, 2007484, 2509355, 4014968, 5018710, 10037420, 20074840]

約数ペア:

[(1, 20074840), (2, 10037420), (4, 5018710), (5, 4014968), (8, 2509355), (10, 2007484), (20, 1003742), (40, 501871), (89, 225560), (178, 112780), (356, 56390), (445, 45112), (712, 28195), (890, 22556), (1780, 11278), (3560, 5639)]