1645520

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{307}}^1$

素因数の和:387

約数の個数: 40

約数和(自身を含む): 3895584

約数和(自身を除く): 2250064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 307, 335, 536, 614, 670, 1072, 1228, 1340, 1535, 2456, 2680, 3070, 4912, 5360, 6140, 12280, 20569, 24560, 41138, 82276, 102845, 164552, 205690, 329104, 411380, 822760, 1645520]

約数ペア:

[(1, 1645520), (2, 822760), (4, 411380), (5, 329104), (8, 205690), (10, 164552), (16, 102845), (20, 82276), (40, 41138), (67, 24560), (80, 20569), (134, 12280), (268, 6140), (307, 5360), (335, 4912), (536, 3070), (614, 2680), (670, 2456), (1072, 1535), (1228, 1340)]