21679560

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{1229}}^1$

素因数の和:1260

約数の個数: 144

約数和(自身を含む): 82028700

約数和(自身を除く): 60349140

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, 42, 45, 49, 56, 60, 63, 70, 72, 84, 90, 98, 105, 120, 126, 140, 147, 168, 180, 196, 210, 245, 252, 280, 294, 315, 360, 392, 420, 441, 490, 504, 588, 630, 735, 840, 882, 980, 1176, 1229, 1260, 1470, 1764, 1960, 2205, 2458, 2520, 2940, 3528, 3687, 4410, 4916, 5880, 6145, 7374, 8603, 8820, 9832, 11061, 12290, 14748, 17206, 17640, 18435, 22122, 24580, 25809, 29496, 34412, 36870, 43015, 44244, 49160, 51618, 55305, 60221, 68824, 73740, 77427, 86030, 88488, 103236, 110610, 120442, 129045, 147480, 154854, 172060, 180663, 206472, 221220, 240884, 258090, 301105, 309708, 344120, 361326, 387135, 442440, 481768, 516180, 541989, 602210, 619416, 722652, 774270, 903315, 1032360, 1083978, 1204420, 1445304, 1548540, 1806630, 2167956, 2408840, 2709945, 3097080, 3613260, 4335912, 5419890, 7226520, 10839780, 21679560]

約数ペア:

[(1, 21679560), (2, 10839780), (3, 7226520), (4, 5419890), (5, 4335912), (6, 3613260), (7, 3097080), (8, 2709945), (9, 2408840), (10, 2167956), (12, 1806630), (14, 1548540), (15, 1445304), (18, 1204420), (20, 1083978), (21, 1032360), (24, 903315), (28, 774270), (30, 722652), (35, 619416), (36, 602210), (40, 541989), (42, 516180), (45, 481768), (49, 442440), (56, 387135), (60, 361326), (63, 344120), (70, 309708), (72, 301105), (84, 258090), (90, 240884), (98, 221220), (105, 206472), (120, 180663), (126, 172060), (140, 154854), (147, 147480), (168, 129045), (180, 120442), (196, 110610), (210, 103236), (245, 88488), (252, 86030), (280, 77427), (294, 73740), (315, 68824), (360, 60221), (392, 55305), (420, 51618), (441, 49160), (490, 44244), (504, 43015), (588, 36870), (630, 34412), (735, 29496), (840, 25809), (882, 24580), (980, 22122), (1176, 18435), (1229, 17640), (1260, 17206), (1470, 14748), (1764, 12290), (1960, 11061), (2205, 9832), (2458, 8820), (2520, 8603), (2940, 7374), (3528, 6145), (3687, 5880), (4410, 4916)]