19980225

素因数分解:

$3^2\times 5^2\times {\mathrm{88801}}^1$

素因数の和:88817

約数の個数: 18

約数和(自身を含む): 35787206

約数和(自身を除く): 15806981

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 88801, 266403, 444005, 799209, 1332015, 2220025, 3996045, 6660075, 19980225]

約数ペア:

[(1, 19980225), (3, 6660075), (5, 3996045), (9, 2220025), (15, 1332015), (25, 799209), (45, 444005), (75, 266403), (225, 88801)]