20983860

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12953}}^1$

素因数の和:12974

約数の個数: 60

約数和(自身を含む): 65832228

約数和(自身を除く): 44848368

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12953, 25906, 38859, 51812, 64765, 77718, 116577, 129530, 155436, 194295, 233154, 259060, 349731, 388590, 466308, 582885, 699462, 777180, 1049193, 1165770, 1398924, 1748655, 2098386, 2331540, 3497310, 4196772, 5245965, 6994620, 10491930, 20983860]

約数ペア:

[(1, 20983860), (2, 10491930), (3, 6994620), (4, 5245965), (5, 4196772), (6, 3497310), (9, 2331540), (10, 2098386), (12, 1748655), (15, 1398924), (18, 1165770), (20, 1049193), (27, 777180), (30, 699462), (36, 582885), (45, 466308), (54, 388590), (60, 349731), (81, 259060), (90, 233154), (108, 194295), (135, 155436), (162, 129530), (180, 116577), (270, 77718), (324, 64765), (405, 51812), (540, 38859), (810, 25906), (1620, 12953)]