208545520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{137201}}^1$

素因数の和:137233

約数の個数: 40

約数和(自身を含む): 510391440

約数和(自身を除く): 301845920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 137201, 274402, 548804, 686005, 1097608, 1372010, 2195216, 2606819, 2744020, 5213638, 5488040, 10427276, 10976080, 13034095, 20854552, 26068190, 41709104, 52136380, 104272760, 208545520]

約数ペア:

[(1, 208545520), (2, 104272760), (4, 52136380), (5, 41709104), (8, 26068190), (10, 20854552), (16, 13034095), (19, 10976080), (20, 10427276), (38, 5488040), (40, 5213638), (76, 2744020), (80, 2606819), (95, 2195216), (152, 1372010), (190, 1097608), (304, 686005), (380, 548804), (760, 274402), (1520, 137201)]