28507860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1453}}^1$

素因数の和:1577

約数の個数: 72

約数和(自身を含む): 87327240

約数和(自身を除く): 58819380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 109, 180, 218, 327, 436, 545, 654, 981, 1090, 1308, 1453, 1635, 1962, 2180, 2906, 3270, 3924, 4359, 4905, 5812, 6540, 7265, 8718, 9810, 13077, 14530, 17436, 19620, 21795, 26154, 29060, 43590, 52308, 65385, 87180, 130770, 158377, 261540, 316754, 475131, 633508, 791885, 950262, 1425393, 1583770, 1900524, 2375655, 2850786, 3167540, 4751310, 5701572, 7126965, 9502620, 14253930, 28507860]

約数ペア:

[(1, 28507860), (2, 14253930), (3, 9502620), (4, 7126965), (5, 5701572), (6, 4751310), (9, 3167540), (10, 2850786), (12, 2375655), (15, 1900524), (18, 1583770), (20, 1425393), (30, 950262), (36, 791885), (45, 633508), (60, 475131), (90, 316754), (109, 261540), (180, 158377), (218, 130770), (327, 87180), (436, 65385), (545, 52308), (654, 43590), (981, 29060), (1090, 26154), (1308, 21795), (1453, 19620), (1635, 17436), (1962, 14530), (2180, 13077), (2906, 9810), (3270, 8718), (3924, 7265), (4359, 6540), (4905, 5812)]