89999900

素因数分解:

$2^2\times 5^2\times {\mathrm{397}}^1\times {\mathrm{2267}}^1$

素因数の和:2678

約数の個数: 36

約数和(自身を含む): 195878088

約数和(自身を除く): 105878188

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 397, 794, 1588, 1985, 2267, 3970, 4534, 7940, 9068, 9925, 11335, 19850, 22670, 39700, 45340, 56675, 113350, 226700, 899999, 1799998, 3599996, 4499995, 8999990, 17999980, 22499975, 44999950, 89999900]

約数ペア:

[(1, 89999900), (2, 44999950), (4, 22499975), (5, 17999980), (10, 8999990), (20, 4499995), (25, 3599996), (50, 1799998), (100, 899999), (397, 226700), (794, 113350), (1588, 56675), (1985, 45340), (2267, 39700), (3970, 22670), (4534, 19850), (7940, 11335), (9068, 9925)]