21058425

素因数分解:

$3^2\times 5^2\times {\mathrm{173}}^1\times {\mathrm{541}}^1$

素因数の和:730

約数の個数: 36

約数和(自身を含む): 38006124

約数和(自身を除く): 16947699

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 173, 225, 519, 541, 865, 1557, 1623, 2595, 2705, 4325, 4869, 7785, 8115, 12975, 13525, 24345, 38925, 40575, 93593, 121725, 280779, 467965, 842337, 1403895, 2339825, 4211685, 7019475, 21058425]

約数ペア:

[(1, 21058425), (3, 7019475), (5, 4211685), (9, 2339825), (15, 1403895), (25, 842337), (45, 467965), (75, 280779), (173, 121725), (225, 93593), (519, 40575), (541, 38925), (865, 24345), (1557, 13525), (1623, 12975), (2595, 8115), (2705, 7785), (4325, 4869)]