261601620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{622861}}^1$

素因数の和:622880

約数の個数: 48

約数和(自身を含む): 837126528

約数和(自身を除く): 575524908

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 622861, 1245722, 1868583, 2491444, 3114305, 3737166, 4360027, 6228610, 7474332, 8720054, 9342915, 12457220, 13080081, 17440108, 18685830, 21800135, 26160162, 37371660, 43600270, 52320324, 65400405, 87200540, 130800810, 261601620]

約数ペア:

[(1, 261601620), (2, 130800810), (3, 87200540), (4, 65400405), (5, 52320324), (6, 43600270), (7, 37371660), (10, 26160162), (12, 21800135), (14, 18685830), (15, 17440108), (20, 13080081), (21, 12457220), (28, 9342915), (30, 8720054), (35, 7474332), (42, 6228610), (60, 4360027), (70, 3737166), (84, 3114305), (105, 2491444), (140, 1868583), (210, 1245722), (420, 622861)]