647500905

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:252

約数の個数: 128

約数和(自身を含む): 1277337600

約数和(自身を除く): 629836695

約数列:

[1, 3, 5, 9, 15, 19, 27, 41, 45, 47, 57, 95, 123, 131, 135, 141, 171, 205, 235, 285, 369, 393, 423, 513, 615, 655, 705, 779, 855, 893, 1107, 1179, 1269, 1845, 1927, 1965, 2115, 2337, 2489, 2565, 2679, 3537, 3895, 4465, 5371, 5535, 5781, 5895, 6157, 6345, 7011, 7467, 8037, 9635, 11685, 12445, 13395, 16113, 17343, 17685, 18471, 21033, 22401, 24111, 26855, 28905, 30785, 35055, 36613, 37335, 40185, 48339, 52029, 55413, 67203, 80565, 86715, 92355, 102049, 105165, 109839, 112005, 116983, 120555, 145017, 166239, 183065, 241695, 252437, 260145, 277065, 306147, 329517, 336015, 350949, 510245, 549195, 584915, 725085, 757311, 831195, 918441, 988551, 1052847, 1262185, 1530735, 1647585, 1754745, 2271933, 2755323, 3158541, 3786555, 4592205, 4796303, 4942755, 5264235, 6815799, 11359665, 13776615, 14388909, 15792705, 23981515, 34078995, 43166727, 71944545, 129500181, 215833635, 647500905]

約数ペア:

[(1, 647500905), (3, 215833635), (5, 129500181), (9, 71944545), (15, 43166727), (19, 34078995), (27, 23981515), (41, 15792705), (45, 14388909), (47, 13776615), (57, 11359665), (95, 6815799), (123, 5264235), (131, 4942755), (135, 4796303), (141, 4592205), (171, 3786555), (205, 3158541), (235, 2755323), (285, 2271933), (369, 1754745), (393, 1647585), (423, 1530735), (513, 1262185), (615, 1052847), (655, 988551), (705, 918441), (779, 831195), (855, 757311), (893, 725085), (1107, 584915), (1179, 549195), (1269, 510245), (1845, 350949), (1927, 336015), (1965, 329517), (2115, 306147), (2337, 277065), (2489, 260145), (2565, 252437), (2679, 241695), (3537, 183065), (3895, 166239), (4465, 145017), (5371, 120555), (5535, 116983), (5781, 112005), (5895, 109839), (6157, 105165), (6345, 102049), (7011, 92355), (7467, 86715), (8037, 80565), (9635, 67203), (11685, 55413), (12445, 52029), (13395, 48339), (16113, 40185), (17343, 37335), (17685, 36613), (18471, 35055), (21033, 30785), (22401, 28905), (24111, 26855)]