217908225

素因数分解:

$3^4\times 5^2\times {\mathrm{107609}}^1$

素因数の和:107631

約数の個数: 30

約数和(自身を含む): 403645110

約数和(自身を除く): 185736885

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 107609, 322827, 538045, 968481, 1614135, 2690225, 2905443, 4842405, 8070675, 8716329, 14527215, 24212025, 43581645, 72636075, 217908225]

約数ペア:

[(1, 217908225), (3, 72636075), (5, 43581645), (9, 24212025), (15, 14527215), (25, 8716329), (27, 8070675), (45, 4842405), (75, 2905443), (81, 2690225), (135, 1614135), (225, 968481), (405, 538045), (675, 322827), (2025, 107609)]