21459400

素因数分解:

$2^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{2617}}^1$

素因数の和:2674

約数の個数: 48

約数和(自身を含む): 51129540

約数和(自身を除く): 29670140

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 164, 200, 205, 328, 410, 820, 1025, 1640, 2050, 2617, 4100, 5234, 8200, 10468, 13085, 20936, 26170, 52340, 65425, 104680, 107297, 130850, 214594, 261700, 429188, 523400, 536485, 858376, 1072970, 2145940, 2682425, 4291880, 5364850, 10729700, 21459400]

約数ペア:

[(1, 21459400), (2, 10729700), (4, 5364850), (5, 4291880), (8, 2682425), (10, 2145940), (20, 1072970), (25, 858376), (40, 536485), (41, 523400), (50, 429188), (82, 261700), (100, 214594), (164, 130850), (200, 107297), (205, 104680), (328, 65425), (410, 52340), (820, 26170), (1025, 20936), (1640, 13085), (2050, 10468), (2617, 8200), (4100, 5234)]