21246008

素因数分解:

$2^3\times 7^2\times {\mathrm{83}}^1\times {\mathrm{653}}^1$

素因数の和:756

約数の個数: 48

約数和(自身を含む): 46970280

約数和(自身を除く): 25724272

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 83, 98, 166, 196, 332, 392, 581, 653, 664, 1162, 1306, 2324, 2612, 4067, 4571, 4648, 5224, 8134, 9142, 16268, 18284, 31997, 32536, 36568, 54199, 63994, 108398, 127988, 216796, 255976, 379393, 433592, 758786, 1517572, 2655751, 3035144, 5311502, 10623004, 21246008]

約数ペア:

[(1, 21246008), (2, 10623004), (4, 5311502), (7, 3035144), (8, 2655751), (14, 1517572), (28, 758786), (49, 433592), (56, 379393), (83, 255976), (98, 216796), (166, 127988), (196, 108398), (332, 63994), (392, 54199), (581, 36568), (653, 32536), (664, 31997), (1162, 18284), (1306, 16268), (2324, 9142), (2612, 8134), (4067, 5224), (4571, 4648)]