20399145

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^3\times {\mathrm{619}}^1$

素因数の和:666

約数の個数: 32

約数和(自身を含む): 35414400

約数和(自身を除く): 15015255

約数列:

[1, 3, 5, 13, 15, 39, 65, 169, 195, 507, 619, 845, 1857, 2197, 2535, 3095, 6591, 8047, 9285, 10985, 24141, 32955, 40235, 104611, 120705, 313833, 523055, 1359943, 1569165, 4079829, 6799715, 20399145]

約数ペア:

[(1, 20399145), (3, 6799715), (5, 4079829), (13, 1569165), (15, 1359943), (39, 523055), (65, 313833), (169, 120705), (195, 104611), (507, 40235), (619, 32955), (845, 24141), (1857, 10985), (2197, 9285), (2535, 8047), (3095, 6591)]