18201340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{947}}^1$

素因数の和:1018

約数の個数: 36

約数和(自身を含む): 39537288

約数和(自身を除く): 21335948

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 947, 961, 1894, 1922, 3788, 3844, 4735, 4805, 9470, 9610, 18940, 19220, 29357, 58714, 117428, 146785, 293570, 587140, 910067, 1820134, 3640268, 4550335, 9100670, 18201340]

約数ペア:

[(1, 18201340), (2, 9100670), (4, 4550335), (5, 3640268), (10, 1820134), (20, 910067), (31, 587140), (62, 293570), (124, 146785), (155, 117428), (310, 58714), (620, 29357), (947, 19220), (961, 18940), (1894, 9610), (1922, 9470), (3788, 4805), (3844, 4735)]