20921904

素因数分解:

$2^4\times 3^2\times {\mathrm{23}}^1\times {\mathrm{6317}}^1$

素因数の和:6354

約数の個数: 60

約数和(自身を含む): 61107696

約数和(自身を除く): 40185792

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 36, 46, 48, 69, 72, 92, 138, 144, 184, 207, 276, 368, 414, 552, 828, 1104, 1656, 3312, 6317, 12634, 18951, 25268, 37902, 50536, 56853, 75804, 101072, 113706, 145291, 151608, 227412, 290582, 303216, 435873, 454824, 581164, 871746, 909648, 1162328, 1307619, 1743492, 2324656, 2615238, 3486984, 5230476, 6973968, 10460952, 20921904]

約数ペア:

[(1, 20921904), (2, 10460952), (3, 6973968), (4, 5230476), (6, 3486984), (8, 2615238), (9, 2324656), (12, 1743492), (16, 1307619), (18, 1162328), (23, 909648), (24, 871746), (36, 581164), (46, 454824), (48, 435873), (69, 303216), (72, 290582), (92, 227412), (138, 151608), (144, 145291), (184, 113706), (207, 101072), (276, 75804), (368, 56853), (414, 50536), (552, 37902), (828, 25268), (1104, 18951), (1656, 12634), (3312, 6317)]