19402420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{51059}}^1$

素因数の和:51087

約数の個数: 24

約数和(自身を含む): 42890400

約数和(自身を除く): 23487980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 51059, 102118, 204236, 255295, 510590, 970121, 1021180, 1940242, 3880484, 4850605, 9701210, 19402420]

約数ペア:

[(1, 19402420), (2, 9701210), (4, 4850605), (5, 3880484), (10, 1940242), (19, 1021180), (20, 970121), (38, 510590), (76, 255295), (95, 204236), (190, 102118), (380, 51059)]