21039660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{653}}^1$

素因数の和:847

約数の個数: 72

約数和(自身を含む): 64275120

約数和(自身を除く): 43235460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 179, 180, 358, 537, 653, 716, 895, 1074, 1306, 1611, 1790, 1959, 2148, 2612, 2685, 3222, 3265, 3580, 3918, 5370, 5877, 6444, 6530, 7836, 8055, 9795, 10740, 11754, 13060, 16110, 19590, 23508, 29385, 32220, 39180, 58770, 116887, 117540, 233774, 350661, 467548, 584435, 701322, 1051983, 1168870, 1402644, 1753305, 2103966, 2337740, 3506610, 4207932, 5259915, 7013220, 10519830, 21039660]

約数ペア:

[(1, 21039660), (2, 10519830), (3, 7013220), (4, 5259915), (5, 4207932), (6, 3506610), (9, 2337740), (10, 2103966), (12, 1753305), (15, 1402644), (18, 1168870), (20, 1051983), (30, 701322), (36, 584435), (45, 467548), (60, 350661), (90, 233774), (179, 117540), (180, 116887), (358, 58770), (537, 39180), (653, 32220), (716, 29385), (895, 23508), (1074, 19590), (1306, 16110), (1611, 13060), (1790, 11754), (1959, 10740), (2148, 9795), (2612, 8055), (2685, 7836), (3222, 6530), (3265, 6444), (3580, 5877), (3918, 5370)]