21098800

素因数分解:

$2^4\times 5^2\times {\mathrm{52747}}^1$

素因数の和:52765

約数の個数: 30

約数和(自身を含む): 50690828

約数和(自身を除く): 29592028

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 52747, 105494, 210988, 263735, 421976, 527470, 843952, 1054940, 1318675, 2109880, 2637350, 4219760, 5274700, 10549400, 21098800]

約数ペア:

[(1, 21098800), (2, 10549400), (4, 5274700), (5, 4219760), (8, 2637350), (10, 2109880), (16, 1318675), (20, 1054940), (25, 843952), (40, 527470), (50, 421976), (80, 263735), (100, 210988), (200, 105494), (400, 52747)]