17906020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{409}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 41328000

約数和(自身を除く): 23421980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 199, 220, 398, 409, 796, 818, 995, 1636, 1990, 2045, 2189, 3980, 4090, 4378, 4499, 8180, 8756, 8998, 10945, 17996, 21890, 22495, 43780, 44990, 81391, 89980, 162782, 325564, 406955, 813910, 895301, 1627820, 1790602, 3581204, 4476505, 8953010, 17906020]

約数ペア:

[(1, 17906020), (2, 8953010), (4, 4476505), (5, 3581204), (10, 1790602), (11, 1627820), (20, 895301), (22, 813910), (44, 406955), (55, 325564), (110, 162782), (199, 89980), (220, 81391), (398, 44990), (409, 43780), (796, 22495), (818, 21890), (995, 17996), (1636, 10945), (1990, 8998), (2045, 8756), (2189, 8180), (3980, 4499), (4090, 4378)]