19886540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{887}}^1$

素因数の和:974

約数の個数: 48

約数和(自身を含む): 44755200

約数和(自身を除く): 24868660

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 59, 76, 95, 118, 190, 236, 295, 380, 590, 887, 1121, 1180, 1774, 2242, 3548, 4435, 4484, 5605, 8870, 11210, 16853, 17740, 22420, 33706, 52333, 67412, 84265, 104666, 168530, 209332, 261665, 337060, 523330, 994327, 1046660, 1988654, 3977308, 4971635, 9943270, 19886540]

約数ペア:

[(1, 19886540), (2, 9943270), (4, 4971635), (5, 3977308), (10, 1988654), (19, 1046660), (20, 994327), (38, 523330), (59, 337060), (76, 261665), (95, 209332), (118, 168530), (190, 104666), (236, 84265), (295, 67412), (380, 52333), (590, 33706), (887, 22420), (1121, 17740), (1180, 16853), (1774, 11210), (2242, 8870), (3548, 5605), (4435, 4484)]