19500010

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{239}}^1$

素因数の和:486

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 16787990

約数列:

[1, 2, 5, 10, 41, 82, 199, 205, 239, 398, 410, 478, 995, 1195, 1990, 2390, 8159, 9799, 16318, 19598, 40795, 47561, 48995, 81590, 95122, 97990, 237805, 475610, 1950001, 3900002, 9750005, 19500010]

約数ペア:

[(1, 19500010), (2, 9750005), (5, 3900002), (10, 1950001), (41, 475610), (82, 237805), (199, 97990), (205, 95122), (239, 81590), (398, 48995), (410, 47561), (478, 40795), (995, 19598), (1195, 16318), (1990, 9799), (2390, 8159)]