21808928

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:441

約数の個数: 48

約数和(自身を含む): 45178560

約数和(自身を除く): 23369632

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 71, 116, 142, 232, 284, 331, 464, 568, 662, 928, 1136, 1324, 2059, 2272, 2648, 4118, 5296, 8236, 9599, 10592, 16472, 19198, 23501, 32944, 38396, 47002, 65888, 76792, 94004, 153584, 188008, 307168, 376016, 681529, 752032, 1363058, 2726116, 5452232, 10904464, 21808928]

約数ペア:

[(1, 21808928), (2, 10904464), (4, 5452232), (8, 2726116), (16, 1363058), (29, 752032), (32, 681529), (58, 376016), (71, 307168), (116, 188008), (142, 153584), (232, 94004), (284, 76792), (331, 65888), (464, 47002), (568, 38396), (662, 32944), (928, 23501), (1136, 19198), (1324, 16472), (2059, 10592), (2272, 9599), (2648, 8236), (4118, 5296)]