1984775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:251

約数の個数: 24

約数和(自身を含む): 2749824

約数和(自身を除く): 765049

約数列:

[1, 5, 13, 25, 31, 65, 155, 197, 325, 403, 775, 985, 2015, 2561, 4925, 6107, 10075, 12805, 30535, 64025, 79391, 152675, 396955, 1984775]

約数ペア:

[(1, 1984775), (5, 396955), (13, 152675), (25, 79391), (31, 64025), (65, 30535), (155, 12805), (197, 10075), (325, 6107), (403, 4925), (775, 2561), (985, 2015)]