21283100

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:263

約数の個数: 72

約数和(自身を含む): 49215600

約数和(自身を除く): 27932500

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 41, 50, 58, 82, 100, 116, 145, 164, 179, 205, 290, 358, 410, 580, 716, 725, 820, 895, 1025, 1189, 1450, 1790, 2050, 2378, 2900, 3580, 4100, 4475, 4756, 5191, 5945, 7339, 8950, 10382, 11890, 14678, 17900, 20764, 23780, 25955, 29356, 29725, 36695, 51910, 59450, 73390, 103820, 118900, 129775, 146780, 183475, 212831, 259550, 366950, 425662, 519100, 733900, 851324, 1064155, 2128310, 4256620, 5320775, 10641550, 21283100]

約数ペア:

[(1, 21283100), (2, 10641550), (4, 5320775), (5, 4256620), (10, 2128310), (20, 1064155), (25, 851324), (29, 733900), (41, 519100), (50, 425662), (58, 366950), (82, 259550), (100, 212831), (116, 183475), (145, 146780), (164, 129775), (179, 118900), (205, 103820), (290, 73390), (358, 59450), (410, 51910), (580, 36695), (716, 29725), (725, 29356), (820, 25955), (895, 23780), (1025, 20764), (1189, 17900), (1450, 14678), (1790, 11890), (2050, 10382), (2378, 8950), (2900, 7339), (3580, 5945), (4100, 5191), (4475, 4756)]