20776560

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{149}}^1$

素因数の和:255

約数の個数: 160

約数和(自身を含む): 74995200

約数和(自身を除く): 54218640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 83, 84, 105, 112, 120, 140, 149, 166, 168, 210, 240, 249, 280, 298, 332, 336, 415, 420, 447, 498, 560, 581, 596, 664, 745, 830, 840, 894, 996, 1043, 1162, 1192, 1245, 1328, 1490, 1660, 1680, 1743, 1788, 1992, 2086, 2235, 2324, 2384, 2490, 2905, 2980, 3129, 3320, 3486, 3576, 3984, 4172, 4470, 4648, 4980, 5215, 5810, 5960, 6258, 6640, 6972, 7152, 8344, 8715, 8940, 9296, 9960, 10430, 11620, 11920, 12367, 12516, 13944, 15645, 16688, 17430, 17880, 19920, 20860, 23240, 24734, 25032, 27888, 31290, 34860, 35760, 37101, 41720, 46480, 49468, 50064, 61835, 62580, 69720, 74202, 83440, 86569, 98936, 123670, 125160, 139440, 148404, 173138, 185505, 197872, 247340, 250320, 259707, 296808, 346276, 371010, 432845, 494680, 519414, 593616, 692552, 742020, 865690, 989360, 1038828, 1298535, 1385104, 1484040, 1731380, 2077656, 2597070, 2968080, 3462760, 4155312, 5194140, 6925520, 10388280, 20776560]

約数ペア:

[(1, 20776560), (2, 10388280), (3, 6925520), (4, 5194140), (5, 4155312), (6, 3462760), (7, 2968080), (8, 2597070), (10, 2077656), (12, 1731380), (14, 1484040), (15, 1385104), (16, 1298535), (20, 1038828), (21, 989360), (24, 865690), (28, 742020), (30, 692552), (35, 593616), (40, 519414), (42, 494680), (48, 432845), (56, 371010), (60, 346276), (70, 296808), (80, 259707), (83, 250320), (84, 247340), (105, 197872), (112, 185505), (120, 173138), (140, 148404), (149, 139440), (166, 125160), (168, 123670), (210, 98936), (240, 86569), (249, 83440), (280, 74202), (298, 69720), (332, 62580), (336, 61835), (415, 50064), (420, 49468), (447, 46480), (498, 41720), (560, 37101), (581, 35760), (596, 34860), (664, 31290), (745, 27888), (830, 25032), (840, 24734), (894, 23240), (996, 20860), (1043, 19920), (1162, 17880), (1192, 17430), (1245, 16688), (1328, 15645), (1490, 13944), (1660, 12516), (1680, 12367), (1743, 11920), (1788, 11620), (1992, 10430), (2086, 9960), (2235, 9296), (2324, 8940), (2384, 8715), (2490, 8344), (2905, 7152), (2980, 6972), (3129, 6640), (3320, 6258), (3486, 5960), (3576, 5810), (3984, 5215), (4172, 4980), (4470, 4648)]