21919312

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{72103}}^1$

素因数の和:72130

約数の個数: 20

約数和(自身を含む): 44704480

約数和(自身を除く): 22785168

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 72103, 144206, 288412, 576824, 1153648, 1369957, 2739914, 5479828, 10959656, 21919312]

約数ペア:

[(1, 21919312), (2, 10959656), (4, 5479828), (8, 2739914), (16, 1369957), (19, 1153648), (38, 576824), (76, 288412), (152, 144206), (304, 72103)]