18923840

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4549}}^1$

素因数の和:4579

約数の個数: 56

約数和(自身を含む): 48539400

約数和(自身を除く): 29615560

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, 4549, 9098, 18196, 22745, 36392, 45490, 59137, 72784, 90980, 118274, 145568, 181960, 236548, 291136, 295685, 363920, 473096, 591370, 727840, 946192, 1182740, 1455680, 1892384, 2365480, 3784768, 4730960, 9461920, 18923840]

約数ペア:

[(1, 18923840), (2, 9461920), (4, 4730960), (5, 3784768), (8, 2365480), (10, 1892384), (13, 1455680), (16, 1182740), (20, 946192), (26, 727840), (32, 591370), (40, 473096), (52, 363920), (64, 295685), (65, 291136), (80, 236548), (104, 181960), (130, 145568), (160, 118274), (208, 90980), (260, 72784), (320, 59137), (416, 45490), (520, 36392), (832, 22745), (1040, 18196), (2080, 9098), (4160, 4549)]