28227920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{379}}^1$

素因数の和:425

約数の個数: 120

約数和(自身を含む): 80575200

約数和(自身を除く): 52347280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 49, 56, 70, 76, 80, 95, 98, 112, 133, 140, 152, 190, 196, 245, 266, 280, 304, 379, 380, 392, 490, 532, 560, 665, 758, 760, 784, 931, 980, 1064, 1330, 1516, 1520, 1862, 1895, 1960, 2128, 2653, 2660, 3032, 3724, 3790, 3920, 4655, 5306, 5320, 6064, 7201, 7448, 7580, 9310, 10612, 10640, 13265, 14402, 14896, 15160, 18571, 18620, 21224, 26530, 28804, 30320, 36005, 37142, 37240, 42448, 50407, 53060, 57608, 72010, 74284, 74480, 92855, 100814, 106120, 115216, 144020, 148568, 185710, 201628, 212240, 252035, 288040, 297136, 352849, 371420, 403256, 504070, 576080, 705698, 742840, 806512, 1008140, 1411396, 1485680, 1764245, 2016280, 2822792, 3528490, 4032560, 5645584, 7056980, 14113960, 28227920]

約数ペア:

[(1, 28227920), (2, 14113960), (4, 7056980), (5, 5645584), (7, 4032560), (8, 3528490), (10, 2822792), (14, 2016280), (16, 1764245), (19, 1485680), (20, 1411396), (28, 1008140), (35, 806512), (38, 742840), (40, 705698), (49, 576080), (56, 504070), (70, 403256), (76, 371420), (80, 352849), (95, 297136), (98, 288040), (112, 252035), (133, 212240), (140, 201628), (152, 185710), (190, 148568), (196, 144020), (245, 115216), (266, 106120), (280, 100814), (304, 92855), (379, 74480), (380, 74284), (392, 72010), (490, 57608), (532, 53060), (560, 50407), (665, 42448), (758, 37240), (760, 37142), (784, 36005), (931, 30320), (980, 28804), (1064, 26530), (1330, 21224), (1516, 18620), (1520, 18571), (1862, 15160), (1895, 14896), (1960, 14402), (2128, 13265), (2653, 10640), (2660, 10612), (3032, 9310), (3724, 7580), (3790, 7448), (3920, 7201), (4655, 6064), (5306, 5320)]