21684840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1151}}^1$

素因数の和:1322

約数の個数: 64

約数和(自身を含む): 65525760

約数和(自身を除く): 43840920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 157, 314, 471, 628, 785, 942, 1151, 1256, 1570, 1884, 2302, 2355, 3140, 3453, 3768, 4604, 4710, 5755, 6280, 6906, 9208, 9420, 11510, 13812, 17265, 18840, 23020, 27624, 34530, 46040, 69060, 138120, 180707, 361414, 542121, 722828, 903535, 1084242, 1445656, 1807070, 2168484, 2710605, 3614140, 4336968, 5421210, 7228280, 10842420, 21684840]

約数ペア:

[(1, 21684840), (2, 10842420), (3, 7228280), (4, 5421210), (5, 4336968), (6, 3614140), (8, 2710605), (10, 2168484), (12, 1807070), (15, 1445656), (20, 1084242), (24, 903535), (30, 722828), (40, 542121), (60, 361414), (120, 180707), (157, 138120), (314, 69060), (471, 46040), (628, 34530), (785, 27624), (942, 23020), (1151, 18840), (1256, 17265), (1570, 13812), (1884, 11510), (2302, 9420), (2355, 9208), (3140, 6906), (3453, 6280), (3768, 5755), (4604, 4710)]