988394805

素因数分解:

$3^4\times 5^1\times {\mathrm{2440481}}^1$

素因数の和:2440498

約数の個数: 20

約数和(自身を含む): 1771789932

約数和(自身を除く): 783395127

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 2440481, 7321443, 12202405, 21964329, 36607215, 65892987, 109821645, 197678961, 329464935, 988394805]

約数ペア:

[(1, 988394805), (3, 329464935), (5, 197678961), (9, 109821645), (15, 65892987), (27, 36607215), (45, 21964329), (81, 12202405), (135, 7321443), (405, 2440481)]