21312090

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5507}}^1$

素因数の和:5563

約数の個数: 48

約数和(自身を含む): 56710368

約数和(自身を除く): 35398278

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 43, 45, 86, 90, 129, 215, 258, 387, 430, 645, 774, 1290, 1935, 3870, 5507, 11014, 16521, 27535, 33042, 49563, 55070, 82605, 99126, 165210, 236801, 247815, 473602, 495630, 710403, 1184005, 1420806, 2131209, 2368010, 3552015, 4262418, 7104030, 10656045, 21312090]

約数ペア:

[(1, 21312090), (2, 10656045), (3, 7104030), (5, 4262418), (6, 3552015), (9, 2368010), (10, 2131209), (15, 1420806), (18, 1184005), (30, 710403), (43, 495630), (45, 473602), (86, 247815), (90, 236801), (129, 165210), (215, 99126), (258, 82605), (387, 55070), (430, 49563), (645, 33042), (774, 27535), (1290, 16521), (1935, 11014), (3870, 5507)]