21503440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:129

約数の個数: 160

約数和(自身を含む): 62853120

約数和(自身を除く): 41349680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 43, 47, 56, 70, 76, 80, 86, 94, 95, 112, 133, 140, 152, 172, 188, 190, 215, 235, 266, 280, 301, 304, 329, 344, 376, 380, 430, 470, 532, 560, 602, 658, 665, 688, 752, 760, 817, 860, 893, 940, 1064, 1204, 1316, 1330, 1505, 1520, 1634, 1645, 1720, 1786, 1880, 2021, 2128, 2408, 2632, 2660, 3010, 3268, 3290, 3440, 3572, 3760, 4042, 4085, 4465, 4816, 5264, 5320, 5719, 6020, 6251, 6536, 6580, 7144, 8084, 8170, 8930, 10105, 10640, 11438, 12040, 12502, 13072, 13160, 14147, 14288, 16168, 16340, 17860, 20210, 22876, 24080, 25004, 26320, 28294, 28595, 31255, 32336, 32680, 35720, 38399, 40420, 45752, 50008, 56588, 57190, 62510, 65360, 70735, 71440, 76798, 80840, 91504, 100016, 113176, 114380, 125020, 141470, 153596, 161680, 191995, 226352, 228760, 250040, 268793, 282940, 307192, 383990, 457520, 500080, 537586, 565880, 614384, 767980, 1075172, 1131760, 1343965, 1535960, 2150344, 2687930, 3071920, 4300688, 5375860, 10751720, 21503440]

約数ペア:

[(1, 21503440), (2, 10751720), (4, 5375860), (5, 4300688), (7, 3071920), (8, 2687930), (10, 2150344), (14, 1535960), (16, 1343965), (19, 1131760), (20, 1075172), (28, 767980), (35, 614384), (38, 565880), (40, 537586), (43, 500080), (47, 457520), (56, 383990), (70, 307192), (76, 282940), (80, 268793), (86, 250040), (94, 228760), (95, 226352), (112, 191995), (133, 161680), (140, 153596), (152, 141470), (172, 125020), (188, 114380), (190, 113176), (215, 100016), (235, 91504), (266, 80840), (280, 76798), (301, 71440), (304, 70735), (329, 65360), (344, 62510), (376, 57190), (380, 56588), (430, 50008), (470, 45752), (532, 40420), (560, 38399), (602, 35720), (658, 32680), (665, 32336), (688, 31255), (752, 28595), (760, 28294), (817, 26320), (860, 25004), (893, 24080), (940, 22876), (1064, 20210), (1204, 17860), (1316, 16340), (1330, 16168), (1505, 14288), (1520, 14147), (1634, 13160), (1645, 13072), (1720, 12502), (1786, 12040), (1880, 11438), (2021, 10640), (2128, 10105), (2408, 8930), (2632, 8170), (2660, 8084), (3010, 7144), (3268, 6580), (3290, 6536), (3440, 6251), (3572, 6020), (3760, 5719), (4042, 5320), (4085, 5264), (4465, 4816)]