21861944

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6781}}^1$

素因数の和:6831

約数の個数: 32

約数和(自身を含む): 45575040

約数和(自身を除く): 23713096

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 6781, 13562, 27124, 54248, 88153, 176306, 210211, 352612, 420422, 705224, 840844, 1681688, 2732743, 5465486, 10930972, 21861944]

約数ペア:

[(1, 21861944), (2, 10930972), (4, 5465486), (8, 2732743), (13, 1681688), (26, 840844), (31, 705224), (52, 420422), (62, 352612), (104, 210211), (124, 176306), (248, 88153), (403, 54248), (806, 27124), (1612, 13562), (3224, 6781)]