20490375

素因数分解:

$3^1\times 5^3\times {\mathrm{101}}^1\times {\mathrm{541}}^1$

素因数の和:660

約数の個数: 32

約数和(自身を含む): 34497216

約数和(自身を除く): 14006841

約数列:

[1, 3, 5, 15, 25, 75, 101, 125, 303, 375, 505, 541, 1515, 1623, 2525, 2705, 7575, 8115, 12625, 13525, 37875, 40575, 54641, 67625, 163923, 202875, 273205, 819615, 1366025, 4098075, 6830125, 20490375]

約数ペア:

[(1, 20490375), (3, 6830125), (5, 4098075), (15, 1366025), (25, 819615), (75, 273205), (101, 202875), (125, 163923), (303, 67625), (375, 54641), (505, 40575), (541, 37875), (1515, 13525), (1623, 12625), (2525, 8115), (2705, 7575)]