21629000

素因数分解:

$2^3\times 5^3\times {\mathrm{43}}^1\times {\mathrm{503}}^1$

素因数の和:567

約数の個数: 64

約数和(自身を含む): 51891840

約数和(自身を除く): 30262840

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 125, 172, 200, 215, 250, 344, 430, 500, 503, 860, 1000, 1006, 1075, 1720, 2012, 2150, 2515, 4024, 4300, 5030, 5375, 8600, 10060, 10750, 12575, 20120, 21500, 21629, 25150, 43000, 43258, 50300, 62875, 86516, 100600, 108145, 125750, 173032, 216290, 251500, 432580, 503000, 540725, 865160, 1081450, 2162900, 2703625, 4325800, 5407250, 10814500, 21629000]

約数ペア:

[(1, 21629000), (2, 10814500), (4, 5407250), (5, 4325800), (8, 2703625), (10, 2162900), (20, 1081450), (25, 865160), (40, 540725), (43, 503000), (50, 432580), (86, 251500), (100, 216290), (125, 173032), (172, 125750), (200, 108145), (215, 100600), (250, 86516), (344, 62875), (430, 50300), (500, 43258), (503, 43000), (860, 25150), (1000, 21629), (1006, 21500), (1075, 20120), (1720, 12575), (2012, 10750), (2150, 10060), (2515, 8600), (4024, 5375), (4300, 5030)]