18978450

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{5501}}^1$

素因数の和:5539

約数の個数: 48

約数和(自身を含む): 49121856

約数和(自身を除く): 30143406

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 25, 30, 46, 50, 69, 75, 115, 138, 150, 230, 345, 575, 690, 1150, 1725, 3450, 5501, 11002, 16503, 27505, 33006, 55010, 82515, 126523, 137525, 165030, 253046, 275050, 379569, 412575, 632615, 759138, 825150, 1265230, 1897845, 3163075, 3795690, 6326150, 9489225, 18978450]

約数ペア:

[(1, 18978450), (2, 9489225), (3, 6326150), (5, 3795690), (6, 3163075), (10, 1897845), (15, 1265230), (23, 825150), (25, 759138), (30, 632615), (46, 412575), (50, 379569), (69, 275050), (75, 253046), (115, 165030), (138, 137525), (150, 126523), (230, 82515), (345, 55010), (575, 33006), (690, 27505), (1150, 16503), (1725, 11002), (3450, 5501)]