18220425

素因数分解:

$3^1\times 5^2\times {\mathrm{379}}^1\times {\mathrm{641}}^1$

素因数の和:1033

約数の個数: 24

約数和(自身を含む): 30251040

約数和(自身を除く): 12030615

約数列:

[1, 3, 5, 15, 25, 75, 379, 641, 1137, 1895, 1923, 3205, 5685, 9475, 9615, 16025, 28425, 48075, 242939, 728817, 1214695, 3644085, 6073475, 18220425]

約数ペア:

[(1, 18220425), (3, 6073475), (5, 3644085), (15, 1214695), (25, 728817), (75, 242939), (379, 48075), (641, 28425), (1137, 16025), (1895, 9615), (1923, 9475), (3205, 5685)]