18915520

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4547}}^1$

素因数の和:4577

約数の個数: 56

約数和(自身を含む): 48518064

約数和(自身を除く): 29602544

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 4547, 9094, 18188, 22735, 36376, 45470, 59111, 72752, 90940, 118222, 145504, 181880, 236444, 291008, 295555, 363760, 472888, 591110, 727520, 945776, 1182220, 1455040, 1891552, 2364440, 3783104, 4728880, 9457760, 18915520]

約数ペア:

[(1, 18915520), (2, 9457760), (4, 4728880), (5, 3783104), (8, 2364440), (10, 1891552), (13, 1455040), (16, 1182220), (20, 945776), (26, 727520), (32, 591110), (40, 472888), (52, 363760), (64, 295555), (65, 291008), (80, 236444), (104, 181880), (130, 145504), (160, 118222), (208, 90940), (260, 72752), (320, 59111), (416, 45470), (520, 36376), (832, 22735), (1040, 18188), (2080, 9094), (4160, 4547)]