21423200

素因数分解:

$2^5\times 5^2\times {\mathrm{61}}^1\times {\mathrm{439}}^1$

素因数の和:520

約数の個数: 72

約数和(自身を含む): 53277840

約数和(自身を除く): 31854640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 61, 80, 100, 122, 160, 200, 244, 305, 400, 439, 488, 610, 800, 878, 976, 1220, 1525, 1756, 1952, 2195, 2440, 3050, 3512, 4390, 4880, 6100, 7024, 8780, 9760, 10975, 12200, 14048, 17560, 21950, 24400, 26779, 35120, 43900, 48800, 53558, 70240, 87800, 107116, 133895, 175600, 214232, 267790, 351200, 428464, 535580, 669475, 856928, 1071160, 1338950, 2142320, 2677900, 4284640, 5355800, 10711600, 21423200]

約数ペア:

[(1, 21423200), (2, 10711600), (4, 5355800), (5, 4284640), (8, 2677900), (10, 2142320), (16, 1338950), (20, 1071160), (25, 856928), (32, 669475), (40, 535580), (50, 428464), (61, 351200), (80, 267790), (100, 214232), (122, 175600), (160, 133895), (200, 107116), (244, 87800), (305, 70240), (400, 53558), (439, 48800), (488, 43900), (610, 35120), (800, 26779), (878, 24400), (976, 21950), (1220, 17560), (1525, 14048), (1756, 12200), (1952, 10975), (2195, 9760), (2440, 8780), (3050, 7024), (3512, 6100), (4390, 4880)]