208408815

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2621}}^1$

素因数の和:2685

約数の個数: 64

約数和(自身を含む): 402739200

約数和(自身を除く): 194330385

約数列:

[1, 3, 5, 9, 15, 19, 27, 31, 45, 57, 93, 95, 135, 155, 171, 279, 285, 465, 513, 589, 837, 855, 1395, 1767, 2565, 2621, 2945, 4185, 5301, 7863, 8835, 13105, 15903, 23589, 26505, 39315, 49799, 70767, 79515, 81251, 117945, 149397, 243753, 248995, 353835, 406255, 448191, 731259, 746985, 1218765, 1344573, 1543769, 2193777, 2240955, 3656295, 4631307, 6722865, 7718845, 10968885, 13893921, 23156535, 41681763, 69469605, 208408815]

約数ペア:

[(1, 208408815), (3, 69469605), (5, 41681763), (9, 23156535), (15, 13893921), (19, 10968885), (27, 7718845), (31, 6722865), (45, 4631307), (57, 3656295), (93, 2240955), (95, 2193777), (135, 1543769), (155, 1344573), (171, 1218765), (279, 746985), (285, 731259), (465, 448191), (513, 406255), (589, 353835), (837, 248995), (855, 243753), (1395, 149397), (1767, 117945), (2565, 81251), (2621, 79515), (2945, 70767), (4185, 49799), (5301, 39315), (7863, 26505), (8835, 23589), (13105, 15903)]