408519080

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{249097}}^1$

素因数の和:249149

約数の個数: 32

約数和(自身を含む): 941590440

約数和(自身を除く): 533071360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 249097, 498194, 996388, 1245485, 1992776, 2490970, 4981940, 9963880, 10212977, 20425954, 40851908, 51064885, 81703816, 102129770, 204259540, 408519080]

約数ペア:

[(1, 408519080), (2, 204259540), (4, 102129770), (5, 81703816), (8, 51064885), (10, 40851908), (20, 20425954), (40, 10212977), (41, 9963880), (82, 4981940), (164, 2490970), (205, 1992776), (328, 1245485), (410, 996388), (820, 498194), (1640, 249097)]