20091281872

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{587}}^1\times {\mathrm{112589}}^1$

素因数の和:113203

約数の個数: 40

約数和(自身を含む): 41045810400

約数和(自身を除く): 20954528528

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 587, 1174, 2348, 4696, 9392, 11153, 22306, 44612, 89224, 112589, 178448, 225178, 450356, 900712, 1801424, 2139191, 4278382, 8556764, 17113528, 34227056, 66089743, 132179486, 264358972, 528717944, 1057435888, 1255705117, 2511410234, 5022820468, 10045640936, 20091281872]

約数ペア:

[(1, 20091281872), (2, 10045640936), (4, 5022820468), (8, 2511410234), (16, 1255705117), (19, 1057435888), (38, 528717944), (76, 264358972), (152, 132179486), (304, 66089743), (587, 34227056), (1174, 17113528), (2348, 8556764), (4696, 4278382), (9392, 2139191), (11153, 1801424), (22306, 900712), (44612, 450356), (89224, 225178), (112589, 178448)]