20008880

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{3733}}^1$

素因数の和:3813

約数の個数: 40

約数和(自身を含む): 47227632

約数和(自身を除く): 27218752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 3733, 5360, 7466, 14932, 18665, 29864, 37330, 59728, 74660, 149320, 250111, 298640, 500222, 1000444, 1250555, 2000888, 2501110, 4001776, 5002220, 10004440, 20008880]

約数ペア:

[(1, 20008880), (2, 10004440), (4, 5002220), (5, 4001776), (8, 2501110), (10, 2000888), (16, 1250555), (20, 1000444), (40, 500222), (67, 298640), (80, 250111), (134, 149320), (268, 74660), (335, 59728), (536, 37330), (670, 29864), (1072, 18665), (1340, 14932), (2680, 7466), (3733, 5360)]