20755280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2851}}^1$

素因数の和:2884

約数の個数: 80

約数和(自身を含む): 59412864

約数和(自身を除く): 38657584

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 2851, 3640, 5702, 7280, 11404, 14255, 19957, 22808, 28510, 37063, 39914, 45616, 57020, 74126, 79828, 99785, 114040, 148252, 159656, 185315, 199570, 228080, 259441, 296504, 319312, 370630, 399140, 518882, 593008, 741260, 798280, 1037764, 1297205, 1482520, 1596560, 2075528, 2594410, 2965040, 4151056, 5188820, 10377640, 20755280]

約数ペア:

[(1, 20755280), (2, 10377640), (4, 5188820), (5, 4151056), (7, 2965040), (8, 2594410), (10, 2075528), (13, 1596560), (14, 1482520), (16, 1297205), (20, 1037764), (26, 798280), (28, 741260), (35, 593008), (40, 518882), (52, 399140), (56, 370630), (65, 319312), (70, 296504), (80, 259441), (91, 228080), (104, 199570), (112, 185315), (130, 159656), (140, 148252), (182, 114040), (208, 99785), (260, 79828), (280, 74126), (364, 57020), (455, 45616), (520, 39914), (560, 37063), (728, 28510), (910, 22808), (1040, 19957), (1456, 14255), (1820, 11404), (2851, 7280), (3640, 5702)]