1388946820

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{24223}}^1$

素因数の和:24340

約数の個数: 48

約数和(自身を含む): 3027806208

約数和(自身を除く): 1638859388

約数列:

[1, 2, 4, 5, 10, 20, 47, 61, 94, 122, 188, 235, 244, 305, 470, 610, 940, 1220, 2867, 5734, 11468, 14335, 24223, 28670, 48446, 57340, 96892, 121115, 242230, 484460, 1138481, 1477603, 2276962, 2955206, 4553924, 5692405, 5910412, 7388015, 11384810, 14776030, 22769620, 29552060, 69447341, 138894682, 277789364, 347236705, 694473410, 1388946820]

約数ペア:

[(1, 1388946820), (2, 694473410), (4, 347236705), (5, 277789364), (10, 138894682), (20, 69447341), (47, 29552060), (61, 22769620), (94, 14776030), (122, 11384810), (188, 7388015), (235, 5910412), (244, 5692405), (305, 4553924), (470, 2955206), (610, 2276962), (940, 1477603), (1220, 1138481), (2867, 484460), (5734, 242230), (11468, 121115), (14335, 96892), (24223, 57340), (28670, 48446)]