289648240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{517229}}^1$

素因数の和:517249

約数の個数: 40

約数和(自身を含む): 769638240

約数和(自身を除く): 479990000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 517229, 1034458, 2068916, 2586145, 3620603, 4137832, 5172290, 7241206, 8275664, 10344580, 14482412, 18103015, 20689160, 28964824, 36206030, 41378320, 57929648, 72412060, 144824120, 289648240]

約数ペア:

[(1, 289648240), (2, 144824120), (4, 72412060), (5, 57929648), (7, 41378320), (8, 36206030), (10, 28964824), (14, 20689160), (16, 18103015), (20, 14482412), (28, 10344580), (35, 8275664), (40, 7241206), (56, 5172290), (70, 4137832), (80, 3620603), (112, 2586145), (140, 2068916), (280, 1034458), (560, 517229)]