217191870

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{344749}}^1$

素因数の和:344769

約数の個数: 48

約数和(自身を含む): 645372000

約数和(自身を除く): 428180130

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630, 344749, 689498, 1034247, 1723745, 2068494, 2413243, 3102741, 3447490, 4826486, 5171235, 6205482, 7239729, 10342470, 12066215, 14479458, 15513705, 21719187, 24132430, 31027410, 36198645, 43438374, 72397290, 108595935, 217191870]

約数ペア:

[(1, 217191870), (2, 108595935), (3, 72397290), (5, 43438374), (6, 36198645), (7, 31027410), (9, 24132430), (10, 21719187), (14, 15513705), (15, 14479458), (18, 12066215), (21, 10342470), (30, 7239729), (35, 6205482), (42, 5171235), (45, 4826486), (63, 3447490), (70, 3102741), (90, 2413243), (105, 2068494), (126, 1723745), (210, 1034247), (315, 689498), (630, 344749)]