205128885

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61879}}^1$

素因数の和:61917

約数の個数: 32

約数和(自身を含む): 374250240

約数和(自身を除く): 169121355

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 663, 1105, 3315, 61879, 185637, 309395, 804427, 928185, 1051943, 2413281, 3155829, 4022135, 5259715, 12066405, 13675259, 15779145, 41025777, 68376295, 205128885]

約数ペア:

[(1, 205128885), (3, 68376295), (5, 41025777), (13, 15779145), (15, 13675259), (17, 12066405), (39, 5259715), (51, 4022135), (65, 3155829), (85, 2413281), (195, 1051943), (221, 928185), (255, 804427), (663, 309395), (1105, 185637), (3315, 61879)]