20796580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21221}}^1$

素因数の和:21244

約数の個数: 36

約数和(自身を含む): 50805468

約数和(自身を除く): 30008888

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21221, 42442, 84884, 106105, 148547, 212210, 297094, 424420, 594188, 742735, 1039829, 1485470, 2079658, 2970940, 4159316, 5199145, 10398290, 20796580]

約数ペア:

[(1, 20796580), (2, 10398290), (4, 5199145), (5, 4159316), (7, 2970940), (10, 2079658), (14, 1485470), (20, 1039829), (28, 742735), (35, 594188), (49, 424420), (70, 297094), (98, 212210), (140, 148547), (196, 106105), (245, 84884), (490, 42442), (980, 21221)]