21295320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4127}}^1$

素因数の和:4184

約数の個数: 64

約数和(自身を含む): 65387520

約数和(自身を除く): 44092200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 4127, 5160, 8254, 12381, 16508, 20635, 24762, 33016, 41270, 49524, 61905, 82540, 99048, 123810, 165080, 177461, 247620, 354922, 495240, 532383, 709844, 887305, 1064766, 1419688, 1774610, 2129532, 2661915, 3549220, 4259064, 5323830, 7098440, 10647660, 21295320]

約数ペア:

[(1, 21295320), (2, 10647660), (3, 7098440), (4, 5323830), (5, 4259064), (6, 3549220), (8, 2661915), (10, 2129532), (12, 1774610), (15, 1419688), (20, 1064766), (24, 887305), (30, 709844), (40, 532383), (43, 495240), (60, 354922), (86, 247620), (120, 177461), (129, 165080), (172, 123810), (215, 99048), (258, 82540), (344, 61905), (430, 49524), (516, 41270), (645, 33016), (860, 24762), (1032, 20635), (1290, 16508), (1720, 12381), (2580, 8254), (4127, 5160)]