21215880

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{8419}}^1$

素因数の和:8443

約数の個数: 96

約数和(自身を含む): 78811200

約数和(自身を除く): 57595320

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, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 8419, 16838, 25257, 33676, 42095, 50514, 58933, 67352, 75771, 84190, 101028, 117866, 126285, 151542, 168380, 176799, 202056, 235732, 252570, 294665, 303084, 336760, 353598, 378855, 471464, 505140, 530397, 589330, 606168, 707196, 757710, 883995, 1010280, 1060794, 1178660, 1414392, 1515420, 1767990, 2121588, 2357320, 2651985, 3030840, 3535980, 4243176, 5303970, 7071960, 10607940, 21215880]

約数ペア:

[(1, 21215880), (2, 10607940), (3, 7071960), (4, 5303970), (5, 4243176), (6, 3535980), (7, 3030840), (8, 2651985), (9, 2357320), (10, 2121588), (12, 1767990), (14, 1515420), (15, 1414392), (18, 1178660), (20, 1060794), (21, 1010280), (24, 883995), (28, 757710), (30, 707196), (35, 606168), (36, 589330), (40, 530397), (42, 505140), (45, 471464), (56, 378855), (60, 353598), (63, 336760), (70, 303084), (72, 294665), (84, 252570), (90, 235732), (105, 202056), (120, 176799), (126, 168380), (140, 151542), (168, 126285), (180, 117866), (210, 101028), (252, 84190), (280, 75771), (315, 67352), (360, 58933), (420, 50514), (504, 42095), (630, 33676), (840, 25257), (1260, 16838), (2520, 8419)]