20109880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71821}}^1$

素因数の和:71839

約数の個数: 32

約数和(自身を含む): 51711840

約数和(自身を除く): 31601960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71821, 143642, 287284, 359105, 502747, 574568, 718210, 1005494, 1436420, 2010988, 2513735, 2872840, 4021976, 5027470, 10054940, 20109880]

約数ペア:

[(1, 20109880), (2, 10054940), (4, 5027470), (5, 4021976), (7, 2872840), (8, 2513735), (10, 2010988), (14, 1436420), (20, 1005494), (28, 718210), (35, 574568), (40, 502747), (56, 359105), (70, 287284), (140, 143642), (280, 71821)]