20421772

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{17789}}^1$

素因数の和:17841

約数の個数: 24

約数和(自身を含む): 41842080

約数和(自身を除く): 21420308

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 17789, 35578, 71156, 124523, 249046, 498092, 729349, 1458698, 2917396, 5105443, 10210886, 20421772]

約数ペア:

[(1, 20421772), (2, 10210886), (4, 5105443), (7, 2917396), (14, 1458698), (28, 729349), (41, 498092), (82, 249046), (164, 124523), (287, 71156), (574, 35578), (1148, 17789)]