21015536

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77263}}^1$

素因数の和:77288

約数の個数: 20

約数和(自身を含む): 43113312

約数和(自身を除く): 22097776

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77263, 154526, 309052, 618104, 1236208, 1313471, 2626942, 5253884, 10507768, 21015536]

約数ペア:

[(1, 21015536), (2, 10507768), (4, 5253884), (8, 2626942), (16, 1313471), (17, 1236208), (34, 618104), (68, 309052), (136, 154526), (272, 77263)]