21891572

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{4057}}^1$

素因数の和:4151

約数の個数: 24

約数和(自身を含む): 40904640

約数和(自身を除く): 19013068

約数列:

[1, 2, 4, 19, 38, 71, 76, 142, 284, 1349, 2698, 4057, 5396, 8114, 16228, 77083, 154166, 288047, 308332, 576094, 1152188, 5472893, 10945786, 21891572]

約数ペア:

[(1, 21891572), (2, 10945786), (4, 5472893), (19, 1152188), (38, 576094), (71, 308332), (76, 288047), (142, 154166), (284, 77083), (1349, 16228), (2698, 8114), (4057, 5396)]