21121680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{88007}}^1$

素因数の和:88023

約数の個数: 40

約数和(自身を含む): 65477952

約数和(自身を除く): 44356272

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 88007, 176014, 264021, 352028, 440035, 528042, 704056, 880070, 1056084, 1320105, 1408112, 1760140, 2112168, 2640210, 3520280, 4224336, 5280420, 7040560, 10560840, 21121680]

約数ペア:

[(1, 21121680), (2, 10560840), (3, 7040560), (4, 5280420), (5, 4224336), (6, 3520280), (8, 2640210), (10, 2112168), (12, 1760140), (15, 1408112), (16, 1320105), (20, 1056084), (24, 880070), (30, 704056), (40, 528042), (48, 440035), (60, 352028), (80, 264021), (120, 176014), (240, 88007)]