20845090

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2239}}^1$

素因数の和:2279

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 25119710

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 49, 70, 95, 98, 133, 190, 245, 266, 490, 665, 931, 1330, 1862, 2239, 4478, 4655, 9310, 11195, 15673, 22390, 31346, 42541, 78365, 85082, 109711, 156730, 212705, 219422, 297787, 425410, 548555, 595574, 1097110, 1488935, 2084509, 2977870, 4169018, 10422545, 20845090]

約数ペア:

[(1, 20845090), (2, 10422545), (5, 4169018), (7, 2977870), (10, 2084509), (14, 1488935), (19, 1097110), (35, 595574), (38, 548555), (49, 425410), (70, 297787), (95, 219422), (98, 212705), (133, 156730), (190, 109711), (245, 85082), (266, 78365), (490, 42541), (665, 31346), (931, 22390), (1330, 15673), (1862, 11195), (2239, 9310), (4478, 4655)]