201520305

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2293}}^1$

素因数の和:2348

約数の個数: 80

約数和(自身を含む): 426353664

約数和(自身を除く): 224833359

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 31, 35, 45, 63, 81, 93, 105, 135, 155, 189, 217, 279, 315, 405, 465, 567, 651, 837, 945, 1085, 1395, 1953, 2293, 2511, 2835, 3255, 4185, 5859, 6879, 9765, 11465, 12555, 16051, 17577, 20637, 29295, 34395, 48153, 61911, 71083, 80255, 87885, 103185, 144459, 185733, 213249, 240765, 309555, 355415, 433377, 497581, 639747, 722295, 928665, 1066245, 1300131, 1492743, 1919241, 2166885, 2487905, 3198735, 4478229, 5757723, 6500655, 7463715, 9596205, 13434687, 22391145, 28788615, 40304061, 67173435, 201520305]

約数ペア:

[(1, 201520305), (3, 67173435), (5, 40304061), (7, 28788615), (9, 22391145), (15, 13434687), (21, 9596205), (27, 7463715), (31, 6500655), (35, 5757723), (45, 4478229), (63, 3198735), (81, 2487905), (93, 2166885), (105, 1919241), (135, 1492743), (155, 1300131), (189, 1066245), (217, 928665), (279, 722295), (315, 639747), (405, 497581), (465, 433377), (567, 355415), (651, 309555), (837, 240765), (945, 213249), (1085, 185733), (1395, 144459), (1953, 103185), (2293, 87885), (2511, 80255), (2835, 71083), (3255, 61911), (4185, 48153), (5859, 34395), (6879, 29295), (9765, 20637), (11465, 17577), (12555, 16051)]