128640420

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{238223}}^1$

素因数の和:238241

約数の個数: 48

約数和(自身を含む): 400216320

約数和(自身を除く): 271575900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 238223, 476446, 714669, 952892, 1191115, 1429338, 2144007, 2382230, 2858676, 3573345, 4288014, 4764460, 6432021, 7146690, 8576028, 10720035, 12864042, 14293380, 21440070, 25728084, 32160105, 42880140, 64320210, 128640420]

約数ペア:

[(1, 128640420), (2, 64320210), (3, 42880140), (4, 32160105), (5, 25728084), (6, 21440070), (9, 14293380), (10, 12864042), (12, 10720035), (15, 8576028), (18, 7146690), (20, 6432021), (27, 4764460), (30, 4288014), (36, 3573345), (45, 2858676), (54, 2382230), (60, 2144007), (90, 1429338), (108, 1191115), (135, 952892), (180, 714669), (270, 476446), (540, 238223)]