21177240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1483}}^1$

素因数の和:1521

約数の個数: 128

約数和(自身を含む): 76930560

約数和(自身を除く): 55753320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 17, 20, 21, 24, 28, 30, 34, 35, 40, 42, 51, 56, 60, 68, 70, 84, 85, 102, 105, 119, 120, 136, 140, 168, 170, 204, 210, 238, 255, 280, 340, 357, 408, 420, 476, 510, 595, 680, 714, 840, 952, 1020, 1190, 1428, 1483, 1785, 2040, 2380, 2856, 2966, 3570, 4449, 4760, 5932, 7140, 7415, 8898, 10381, 11864, 14280, 14830, 17796, 20762, 22245, 25211, 29660, 31143, 35592, 41524, 44490, 50422, 51905, 59320, 62286, 75633, 83048, 88980, 100844, 103810, 124572, 126055, 151266, 155715, 176477, 177960, 201688, 207620, 249144, 252110, 302532, 311430, 352954, 378165, 415240, 504220, 529431, 605064, 622860, 705908, 756330, 882385, 1008440, 1058862, 1245720, 1411816, 1512660, 1764770, 2117724, 2647155, 3025320, 3529540, 4235448, 5294310, 7059080, 10588620, 21177240]

約数ペア:

[(1, 21177240), (2, 10588620), (3, 7059080), (4, 5294310), (5, 4235448), (6, 3529540), (7, 3025320), (8, 2647155), (10, 2117724), (12, 1764770), (14, 1512660), (15, 1411816), (17, 1245720), (20, 1058862), (21, 1008440), (24, 882385), (28, 756330), (30, 705908), (34, 622860), (35, 605064), (40, 529431), (42, 504220), (51, 415240), (56, 378165), (60, 352954), (68, 311430), (70, 302532), (84, 252110), (85, 249144), (102, 207620), (105, 201688), (119, 177960), (120, 176477), (136, 155715), (140, 151266), (168, 126055), (170, 124572), (204, 103810), (210, 100844), (238, 88980), (255, 83048), (280, 75633), (340, 62286), (357, 59320), (408, 51905), (420, 50422), (476, 44490), (510, 41524), (595, 35592), (680, 31143), (714, 29660), (840, 25211), (952, 22245), (1020, 20762), (1190, 17796), (1428, 14830), (1483, 14280), (1785, 11864), (2040, 10381), (2380, 8898), (2856, 7415), (2966, 7140), (3570, 5932), (4449, 4760)]