20617380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16363}}^1$

素因数の和:16385

約数の個数: 72

約数和(自身を含む): 71477952

約数和(自身を除く): 50860572

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16363, 32726, 49089, 65452, 81815, 98178, 114541, 147267, 163630, 196356, 229082, 245445, 294534, 327260, 343623, 458164, 490890, 572705, 589068, 687246, 736335, 981780, 1030869, 1145410, 1374492, 1472670, 1718115, 2061738, 2290820, 2945340, 3436230, 4123476, 5154345, 6872460, 10308690, 20617380]

約数ペア:

[(1, 20617380), (2, 10308690), (3, 6872460), (4, 5154345), (5, 4123476), (6, 3436230), (7, 2945340), (9, 2290820), (10, 2061738), (12, 1718115), (14, 1472670), (15, 1374492), (18, 1145410), (20, 1030869), (21, 981780), (28, 736335), (30, 687246), (35, 589068), (36, 572705), (42, 490890), (45, 458164), (60, 343623), (63, 327260), (70, 294534), (84, 245445), (90, 229082), (105, 196356), (126, 163630), (140, 147267), (180, 114541), (210, 98178), (252, 81815), (315, 65452), (420, 49089), (630, 32726), (1260, 16363)]