18900225

素因数分解:

$3^2\times 5^2\times {\mathrm{167}}^1\times {\mathrm{503}}^1$

素因数の和:686

約数の個数: 36

約数和(自身を含む): 34122816

約数和(自身を除く): 15222591

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 167, 225, 501, 503, 835, 1503, 1509, 2505, 2515, 4175, 4527, 7515, 7545, 12525, 12575, 22635, 37575, 37725, 84001, 113175, 252003, 420005, 756009, 1260015, 2100025, 3780045, 6300075, 18900225]

約数ペア:

[(1, 18900225), (3, 6300075), (5, 3780045), (9, 2100025), (15, 1260015), (25, 756009), (45, 420005), (75, 252003), (167, 113175), (225, 84001), (501, 37725), (503, 37575), (835, 22635), (1503, 12575), (1509, 12525), (2505, 7545), (2515, 7515), (4175, 4527)]