20123580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{181}}^1$

素因数の和:319

約数の個数: 96

約数和(自身を含む): 60540480

約数和(自身を除く): 40416900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 109, 170, 181, 204, 218, 255, 327, 340, 362, 436, 510, 543, 545, 654, 724, 905, 1020, 1086, 1090, 1308, 1635, 1810, 1853, 2172, 2180, 2715, 3077, 3270, 3620, 3706, 5430, 5559, 6154, 6540, 7412, 9231, 9265, 10860, 11118, 12308, 15385, 18462, 18530, 19729, 22236, 27795, 30770, 36924, 37060, 39458, 46155, 55590, 59187, 61540, 78916, 92310, 98645, 111180, 118374, 184620, 197290, 236748, 295935, 335393, 394580, 591870, 670786, 1006179, 1183740, 1341572, 1676965, 2012358, 3353930, 4024716, 5030895, 6707860, 10061790, 20123580]

約数ペア:

[(1, 20123580), (2, 10061790), (3, 6707860), (4, 5030895), (5, 4024716), (6, 3353930), (10, 2012358), (12, 1676965), (15, 1341572), (17, 1183740), (20, 1006179), (30, 670786), (34, 591870), (51, 394580), (60, 335393), (68, 295935), (85, 236748), (102, 197290), (109, 184620), (170, 118374), (181, 111180), (204, 98645), (218, 92310), (255, 78916), (327, 61540), (340, 59187), (362, 55590), (436, 46155), (510, 39458), (543, 37060), (545, 36924), (654, 30770), (724, 27795), (905, 22236), (1020, 19729), (1086, 18530), (1090, 18462), (1308, 15385), (1635, 12308), (1810, 11118), (1853, 10860), (2172, 9265), (2180, 9231), (2715, 7412), (3077, 6540), (3270, 6154), (3620, 5559), (3706, 5430)]