20940770

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{619}}^1$

素因数の和:842

約数の個数: 32

約数和(自身を含む): 40176000

約数和(自身を除く): 19235230

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 199, 398, 619, 995, 1238, 1990, 3095, 3383, 6190, 6766, 10523, 16915, 21046, 33830, 52615, 105230, 123181, 246362, 615905, 1231810, 2094077, 4188154, 10470385, 20940770]

約数ペア:

[(1, 20940770), (2, 10470385), (5, 4188154), (10, 2094077), (17, 1231810), (34, 615905), (85, 246362), (170, 123181), (199, 105230), (398, 52615), (619, 33830), (995, 21046), (1238, 16915), (1990, 10523), (3095, 6766), (3383, 6190)]