205678720

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{419}}^1$

素因数の和:510

約数の個数: 128

約数和(自身を含む): 539784000

約数和(自身を除く): 334105280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 59, 64, 65, 80, 104, 118, 128, 130, 160, 208, 236, 260, 295, 320, 416, 419, 472, 520, 590, 640, 767, 832, 838, 944, 1040, 1180, 1534, 1664, 1676, 1888, 2080, 2095, 2360, 3068, 3352, 3776, 3835, 4160, 4190, 4720, 5447, 6136, 6704, 7552, 7670, 8320, 8380, 9440, 10894, 12272, 13408, 15340, 16760, 18880, 21788, 24544, 24721, 26816, 27235, 30680, 33520, 37760, 43576, 49088, 49442, 53632, 54470, 61360, 67040, 87152, 98176, 98884, 108940, 122720, 123605, 134080, 174304, 197768, 217880, 245440, 247210, 268160, 321373, 348608, 395536, 435760, 490880, 494420, 642746, 697216, 791072, 871520, 988840, 1285492, 1582144, 1606865, 1743040, 1977680, 2570984, 3164288, 3213730, 3486080, 3955360, 5141968, 6427460, 7910720, 10283936, 12854920, 15821440, 20567872, 25709840, 41135744, 51419680, 102839360, 205678720]

約数ペア:

[(1, 205678720), (2, 102839360), (4, 51419680), (5, 41135744), (8, 25709840), (10, 20567872), (13, 15821440), (16, 12854920), (20, 10283936), (26, 7910720), (32, 6427460), (40, 5141968), (52, 3955360), (59, 3486080), (64, 3213730), (65, 3164288), (80, 2570984), (104, 1977680), (118, 1743040), (128, 1606865), (130, 1582144), (160, 1285492), (208, 988840), (236, 871520), (260, 791072), (295, 697216), (320, 642746), (416, 494420), (419, 490880), (472, 435760), (520, 395536), (590, 348608), (640, 321373), (767, 268160), (832, 247210), (838, 245440), (944, 217880), (1040, 197768), (1180, 174304), (1534, 134080), (1664, 123605), (1676, 122720), (1888, 108940), (2080, 98884), (2095, 98176), (2360, 87152), (3068, 67040), (3352, 61360), (3776, 54470), (3835, 53632), (4160, 49442), (4190, 49088), (4720, 43576), (5447, 37760), (6136, 33520), (6704, 30680), (7552, 27235), (7670, 26816), (8320, 24721), (8380, 24544), (9440, 21788), (10894, 18880), (12272, 16760), (13408, 15340)]