18969760

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2237}}^1$

素因数の和:2305

約数の個数: 48

約数和(自身を含む): 45682056

約数和(自身を除く): 26712296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 212, 265, 424, 530, 848, 1060, 1696, 2120, 2237, 4240, 4474, 8480, 8948, 11185, 17896, 22370, 35792, 44740, 71584, 89480, 118561, 178960, 237122, 357920, 474244, 592805, 948488, 1185610, 1896976, 2371220, 3793952, 4742440, 9484880, 18969760]

約数ペア:

[(1, 18969760), (2, 9484880), (4, 4742440), (5, 3793952), (8, 2371220), (10, 1896976), (16, 1185610), (20, 948488), (32, 592805), (40, 474244), (53, 357920), (80, 237122), (106, 178960), (160, 118561), (212, 89480), (265, 71584), (424, 44740), (530, 35792), (848, 22370), (1060, 17896), (1696, 11185), (2120, 8948), (2237, 8480), (4240, 4474)]