21290160

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2063}}^1$

素因数の和:2122

約数の個数: 80

約数和(自身を含む): 67567104

約数和(自身を除く): 46276944

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 43, 48, 60, 80, 86, 120, 129, 172, 215, 240, 258, 344, 430, 516, 645, 688, 860, 1032, 1290, 1720, 2063, 2064, 2580, 3440, 4126, 5160, 6189, 8252, 10315, 10320, 12378, 16504, 20630, 24756, 30945, 33008, 41260, 49512, 61890, 82520, 88709, 99024, 123780, 165040, 177418, 247560, 266127, 354836, 443545, 495120, 532254, 709672, 887090, 1064508, 1330635, 1419344, 1774180, 2129016, 2661270, 3548360, 4258032, 5322540, 7096720, 10645080, 21290160]

約数ペア:

[(1, 21290160), (2, 10645080), (3, 7096720), (4, 5322540), (5, 4258032), (6, 3548360), (8, 2661270), (10, 2129016), (12, 1774180), (15, 1419344), (16, 1330635), (20, 1064508), (24, 887090), (30, 709672), (40, 532254), (43, 495120), (48, 443545), (60, 354836), (80, 266127), (86, 247560), (120, 177418), (129, 165040), (172, 123780), (215, 99024), (240, 88709), (258, 82520), (344, 61890), (430, 49512), (516, 41260), (645, 33008), (688, 30945), (860, 24756), (1032, 20630), (1290, 16504), (1720, 12378), (2063, 10320), (2064, 10315), (2580, 8252), (3440, 6189), (4126, 5160)]