221821840

素因数分解:

$2^4\times 5^1\times {\mathrm{257}}^1\times {\mathrm{10789}}^1$

素因数の和:11059

約数の個数: 40

約数和(自身を含む): 517790520

約数和(自身を除く): 295968680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257, 514, 1028, 1285, 2056, 2570, 4112, 5140, 10280, 10789, 20560, 21578, 43156, 53945, 86312, 107890, 172624, 215780, 431560, 863120, 2772773, 5545546, 11091092, 13863865, 22182184, 27727730, 44364368, 55455460, 110910920, 221821840]

約数ペア:

[(1, 221821840), (2, 110910920), (4, 55455460), (5, 44364368), (8, 27727730), (10, 22182184), (16, 13863865), (20, 11091092), (40, 5545546), (80, 2772773), (257, 863120), (514, 431560), (1028, 215780), (1285, 172624), (2056, 107890), (2570, 86312), (4112, 53945), (5140, 43156), (10280, 21578), (10789, 20560)]