21336400

素因数分解:

$2^4\times 5^2\times {\mathrm{41}}^1\times {\mathrm{1301}}^1$

素因数の和:1360

約数の個数: 60

約数和(自身を含む): 52551324

約数和(自身を除く): 31214924

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 80, 82, 100, 164, 200, 205, 328, 400, 410, 656, 820, 1025, 1301, 1640, 2050, 2602, 3280, 4100, 5204, 6505, 8200, 10408, 13010, 16400, 20816, 26020, 32525, 52040, 53341, 65050, 104080, 106682, 130100, 213364, 260200, 266705, 426728, 520400, 533410, 853456, 1066820, 1333525, 2133640, 2667050, 4267280, 5334100, 10668200, 21336400]

約数ペア:

[(1, 21336400), (2, 10668200), (4, 5334100), (5, 4267280), (8, 2667050), (10, 2133640), (16, 1333525), (20, 1066820), (25, 853456), (40, 533410), (41, 520400), (50, 426728), (80, 266705), (82, 260200), (100, 213364), (164, 130100), (200, 106682), (205, 104080), (328, 65050), (400, 53341), (410, 52040), (656, 32525), (820, 26020), (1025, 20816), (1301, 16400), (1640, 13010), (2050, 10408), (2602, 8200), (3280, 6505), (4100, 5204)]