21703920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12919}}^1$

素因数の和:12942

約数の個数: 80

約数和(自身を含む): 76899840

約数和(自身を除く): 55195920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12919, 25838, 38757, 51676, 64595, 77514, 90433, 103352, 129190, 155028, 180866, 193785, 206704, 258380, 271299, 310056, 361732, 387570, 452165, 516760, 542598, 620112, 723464, 775140, 904330, 1033520, 1085196, 1356495, 1446928, 1550280, 1808660, 2170392, 2712990, 3100560, 3617320, 4340784, 5425980, 7234640, 10851960, 21703920]

約数ペア:

[(1, 21703920), (2, 10851960), (3, 7234640), (4, 5425980), (5, 4340784), (6, 3617320), (7, 3100560), (8, 2712990), (10, 2170392), (12, 1808660), (14, 1550280), (15, 1446928), (16, 1356495), (20, 1085196), (21, 1033520), (24, 904330), (28, 775140), (30, 723464), (35, 620112), (40, 542598), (42, 516760), (48, 452165), (56, 387570), (60, 361732), (70, 310056), (80, 271299), (84, 258380), (105, 206704), (112, 193785), (120, 180866), (140, 155028), (168, 129190), (210, 103352), (240, 90433), (280, 77514), (336, 64595), (420, 51676), (560, 38757), (840, 25838), (1680, 12919)]