217395801

素因数分解:

$3^2\times 7^3\times {\mathrm{70423}}^1$

素因数の和:70450

約数の個数: 24

約数和(自身を含む): 366204800

約数和(自身を除く): 148808999

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 70423, 211269, 492961, 633807, 1478883, 3450727, 4436649, 10352181, 24155089, 31056543, 72465267, 217395801]

約数ペア:

[(1, 217395801), (3, 72465267), (7, 31056543), (9, 24155089), (21, 10352181), (49, 4436649), (63, 3450727), (147, 1478883), (343, 633807), (441, 492961), (1029, 211269), (3087, 70423)]