21384720

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4243}}^1$

素因数の和:4269

約数の個数: 120

約数和(自身を含む): 82095936

約数和(自身を除く): 60711216

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 4243, 5040, 8486, 12729, 16972, 21215, 25458, 29701, 33944, 38187, 42430, 50916, 59402, 63645, 67888, 76374, 84860, 89103, 101832, 118804, 127290, 148505, 152748, 169720, 178206, 190935, 203664, 237608, 254580, 267309, 297010, 305496, 339440, 356412, 381870, 445515, 475216, 509160, 534618, 594020, 610992, 712824, 763740, 891030, 1018320, 1069236, 1188040, 1336545, 1425648, 1527480, 1782060, 2138472, 2376080, 2673090, 3054960, 3564120, 4276944, 5346180, 7128240, 10692360, 21384720]

約数ペア:

[(1, 21384720), (2, 10692360), (3, 7128240), (4, 5346180), (5, 4276944), (6, 3564120), (7, 3054960), (8, 2673090), (9, 2376080), (10, 2138472), (12, 1782060), (14, 1527480), (15, 1425648), (16, 1336545), (18, 1188040), (20, 1069236), (21, 1018320), (24, 891030), (28, 763740), (30, 712824), (35, 610992), (36, 594020), (40, 534618), (42, 509160), (45, 475216), (48, 445515), (56, 381870), (60, 356412), (63, 339440), (70, 305496), (72, 297010), (80, 267309), (84, 254580), (90, 237608), (105, 203664), (112, 190935), (120, 178206), (126, 169720), (140, 152748), (144, 148505), (168, 127290), (180, 118804), (210, 101832), (240, 89103), (252, 84860), (280, 76374), (315, 67888), (336, 63645), (360, 59402), (420, 50916), (504, 42430), (560, 38187), (630, 33944), (720, 29701), (840, 25458), (1008, 21215), (1260, 16972), (1680, 12729), (2520, 8486), (4243, 5040)]