21800520

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:276

約数の個数: 192

約数和(自身を含む): 83341440

約数和(自身を除く): 61540920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 41, 42, 45, 56, 60, 63, 70, 72, 82, 84, 90, 105, 120, 123, 126, 140, 164, 168, 180, 205, 210, 211, 246, 252, 280, 287, 315, 328, 360, 369, 410, 420, 422, 492, 504, 574, 615, 630, 633, 738, 820, 840, 844, 861, 984, 1055, 1148, 1230, 1260, 1266, 1435, 1476, 1477, 1640, 1688, 1722, 1845, 1899, 2110, 2296, 2460, 2520, 2532, 2583, 2870, 2952, 2954, 3165, 3444, 3690, 3798, 4220, 4305, 4431, 4920, 5064, 5166, 5740, 5908, 6330, 6888, 7380, 7385, 7596, 8440, 8610, 8651, 8862, 9495, 10332, 11480, 11816, 12660, 12915, 13293, 14760, 14770, 15192, 17220, 17302, 17724, 18990, 20664, 22155, 25320, 25830, 25953, 26586, 29540, 34440, 34604, 35448, 37980, 43255, 44310, 51660, 51906, 53172, 59080, 60557, 66465, 69208, 75960, 77859, 86510, 88620, 103320, 103812, 106344, 121114, 129765, 132930, 155718, 173020, 177240, 181671, 207624, 242228, 259530, 265860, 302785, 311436, 346040, 363342, 389295, 484456, 519060, 531720, 545013, 605570, 622872, 726684, 778590, 908355, 1038120, 1090026, 1211140, 1453368, 1557180, 1816710, 2180052, 2422280, 2725065, 3114360, 3633420, 4360104, 5450130, 7266840, 10900260, 21800520]

約数ペア:

[(1, 21800520), (2, 10900260), (3, 7266840), (4, 5450130), (5, 4360104), (6, 3633420), (7, 3114360), (8, 2725065), (9, 2422280), (10, 2180052), (12, 1816710), (14, 1557180), (15, 1453368), (18, 1211140), (20, 1090026), (21, 1038120), (24, 908355), (28, 778590), (30, 726684), (35, 622872), (36, 605570), (40, 545013), (41, 531720), (42, 519060), (45, 484456), (56, 389295), (60, 363342), (63, 346040), (70, 311436), (72, 302785), (82, 265860), (84, 259530), (90, 242228), (105, 207624), (120, 181671), (123, 177240), (126, 173020), (140, 155718), (164, 132930), (168, 129765), (180, 121114), (205, 106344), (210, 103812), (211, 103320), (246, 88620), (252, 86510), (280, 77859), (287, 75960), (315, 69208), (328, 66465), (360, 60557), (369, 59080), (410, 53172), (420, 51906), (422, 51660), (492, 44310), (504, 43255), (574, 37980), (615, 35448), (630, 34604), (633, 34440), (738, 29540), (820, 26586), (840, 25953), (844, 25830), (861, 25320), (984, 22155), (1055, 20664), (1148, 18990), (1230, 17724), (1260, 17302), (1266, 17220), (1435, 15192), (1476, 14770), (1477, 14760), (1640, 13293), (1688, 12915), (1722, 12660), (1845, 11816), (1899, 11480), (2110, 10332), (2296, 9495), (2460, 8862), (2520, 8651), (2532, 8610), (2583, 8440), (2870, 7596), (2952, 7385), (2954, 7380), (3165, 6888), (3444, 6330), (3690, 5908), (3798, 5740), (4220, 5166), (4305, 5064), (4431, 4920)]