21592020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8369}}^1$

素因数の和:8424

約数の個数: 48

約数和(自身を含む): 61871040

約数和(自身を除く): 40279020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 8369, 16738, 25107, 33476, 41845, 50214, 83690, 100428, 125535, 167380, 251070, 359867, 502140, 719734, 1079601, 1439468, 1799335, 2159202, 3598670, 4318404, 5398005, 7197340, 10796010, 21592020]

約数ペア:

[(1, 21592020), (2, 10796010), (3, 7197340), (4, 5398005), (5, 4318404), (6, 3598670), (10, 2159202), (12, 1799335), (15, 1439468), (20, 1079601), (30, 719734), (43, 502140), (60, 359867), (86, 251070), (129, 167380), (172, 125535), (215, 100428), (258, 83690), (430, 50214), (516, 41845), (645, 33476), (860, 25107), (1290, 16738), (2580, 8369)]