209957265

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2389}}^1$

素因数の和:2444

約数の個数: 80

約数和(自身を含む): 444195840

約数和(自身を除く): 234238575

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, 2389, 2511, 2835, 3255, 4185, 5859, 7167, 9765, 11945, 12555, 16723, 17577, 21501, 29295, 35835, 50169, 64503, 74059, 83615, 87885, 107505, 150507, 193509, 222177, 250845, 322515, 370295, 451521, 518413, 666531, 752535, 967545, 1110885, 1354563, 1555239, 1999593, 2257605, 2592065, 3332655, 4665717, 5998779, 6772815, 7776195, 9997965, 13997151, 23328585, 29993895, 41991453, 69985755, 209957265]

約数ペア:

[(1, 209957265), (3, 69985755), (5, 41991453), (7, 29993895), (9, 23328585), (15, 13997151), (21, 9997965), (27, 7776195), (31, 6772815), (35, 5998779), (45, 4665717), (63, 3332655), (81, 2592065), (93, 2257605), (105, 1999593), (135, 1555239), (155, 1354563), (189, 1110885), (217, 967545), (279, 752535), (315, 666531), (405, 518413), (465, 451521), (567, 370295), (651, 322515), (837, 250845), (945, 222177), (1085, 193509), (1395, 150507), (1953, 107505), (2389, 87885), (2511, 83615), (2835, 74059), (3255, 64503), (4185, 50169), (5859, 35835), (7167, 29295), (9765, 21501), (11945, 17577), (12555, 16723)]