20198295

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{677}}^1$

素因数の和:721

約数の個数: 64

約数和(自身を含む): 41005440

約数和(自身を除く): 20807145

約数列:

[1, 3, 5, 9, 13, 15, 17, 27, 39, 45, 51, 65, 85, 117, 135, 153, 195, 221, 255, 351, 459, 585, 663, 677, 765, 1105, 1755, 1989, 2031, 2295, 3315, 3385, 5967, 6093, 8801, 9945, 10155, 11509, 18279, 26403, 29835, 30465, 34527, 44005, 57545, 79209, 91395, 103581, 132015, 149617, 172635, 237627, 310743, 396045, 448851, 517905, 748085, 1188135, 1346553, 1553715, 2244255, 4039659, 6732765, 20198295]

約数ペア:

[(1, 20198295), (3, 6732765), (5, 4039659), (9, 2244255), (13, 1553715), (15, 1346553), (17, 1188135), (27, 748085), (39, 517905), (45, 448851), (51, 396045), (65, 310743), (85, 237627), (117, 172635), (135, 149617), (153, 132015), (195, 103581), (221, 91395), (255, 79209), (351, 57545), (459, 44005), (585, 34527), (663, 30465), (677, 29835), (765, 26403), (1105, 18279), (1755, 11509), (1989, 10155), (2031, 9945), (2295, 8801), (3315, 6093), (3385, 5967)]