163976820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{390421}}^1$

素因数の和:390440

約数の個数: 48

約数和(自身を含む): 524727168

約数和(自身を除く): 360750348

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 390421, 780842, 1171263, 1561684, 1952105, 2342526, 2732947, 3904210, 4685052, 5465894, 5856315, 7808420, 8198841, 10931788, 11712630, 13664735, 16397682, 23425260, 27329470, 32795364, 40994205, 54658940, 81988410, 163976820]

約数ペア:

[(1, 163976820), (2, 81988410), (3, 54658940), (4, 40994205), (5, 32795364), (6, 27329470), (7, 23425260), (10, 16397682), (12, 13664735), (14, 11712630), (15, 10931788), (20, 8198841), (21, 7808420), (28, 5856315), (30, 5465894), (35, 4685052), (42, 3904210), (60, 2732947), (70, 2342526), (84, 1952105), (105, 1561684), (140, 1171263), (210, 780842), (420, 390421)]