208993015

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{809}}^1$

素因数の和:904

約数の個数: 48

約数和(自身を含む): 320604480

約数和(自身を除く): 111611465

約数列:

[1, 5, 7, 11, 35, 55, 61, 77, 121, 305, 385, 427, 605, 671, 809, 847, 2135, 3355, 4045, 4235, 4697, 5663, 7381, 8899, 23485, 28315, 36905, 44495, 49349, 51667, 62293, 97889, 246745, 258335, 311465, 345443, 489445, 542839, 685223, 1727215, 2714195, 3426115, 3799873, 5971229, 18999365, 29856145, 41798603, 208993015]

約数ペア:

[(1, 208993015), (5, 41798603), (7, 29856145), (11, 18999365), (35, 5971229), (55, 3799873), (61, 3426115), (77, 2714195), (121, 1727215), (305, 685223), (385, 542839), (427, 489445), (605, 345443), (671, 311465), (809, 258335), (847, 246745), (2135, 97889), (3355, 62293), (4045, 51667), (4235, 49349), (4697, 44495), (5663, 36905), (7381, 28315), (8899, 23485)]