20287890

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{32203}}^1$

素因数の和:32223

約数の個数: 48

約数和(自身を含む): 60285888

約数和(自身を除く): 39997998

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, 32203, 64406, 96609, 161015, 193218, 225421, 289827, 322030, 450842, 483045, 579654, 676263, 966090, 1127105, 1352526, 1449135, 2028789, 2254210, 2898270, 3381315, 4057578, 6762630, 10143945, 20287890]

約数ペア:

[(1, 20287890), (2, 10143945), (3, 6762630), (5, 4057578), (6, 3381315), (7, 2898270), (9, 2254210), (10, 2028789), (14, 1449135), (15, 1352526), (18, 1127105), (21, 966090), (30, 676263), (35, 579654), (42, 483045), (45, 450842), (63, 322030), (70, 289827), (90, 225421), (105, 193218), (126, 161015), (210, 96609), (315, 64406), (630, 32203)]