20573428

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{643}}^1$

素因数の和:1087

約数の個数: 24

約数和(自身を含む): 38047520

約数和(自身を除く): 17474092

約数列:

[1, 2, 4, 19, 38, 76, 421, 643, 842, 1286, 1684, 2572, 7999, 12217, 15998, 24434, 31996, 48868, 270703, 541406, 1082812, 5143357, 10286714, 20573428]

約数ペア:

[(1, 20573428), (2, 10286714), (4, 5143357), (19, 1082812), (38, 541406), (76, 270703), (421, 48868), (643, 31996), (842, 24434), (1286, 15998), (1684, 12217), (2572, 7999)]