217873395

素因数分解:

$3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8819}}^1$

素因数の和:8897

約数の個数: 40

約数和(自身を含む): 397005840

約数和(自身を除く): 179132445

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 81, 135, 183, 305, 405, 549, 915, 1647, 2745, 4941, 8235, 8819, 24705, 26457, 44095, 79371, 132285, 238113, 396855, 537959, 714339, 1190565, 1613877, 2689795, 3571695, 4841631, 8069385, 14524893, 24208155, 43574679, 72624465, 217873395]

約数ペア:

[(1, 217873395), (3, 72624465), (5, 43574679), (9, 24208155), (15, 14524893), (27, 8069385), (45, 4841631), (61, 3571695), (81, 2689795), (135, 1613877), (183, 1190565), (305, 714339), (405, 537959), (549, 396855), (915, 238113), (1647, 132285), (2745, 79371), (4941, 44095), (8235, 26457), (8819, 24705)]