21549040

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{14177}}^1$

素因数の和:14209

約数の個数: 40

約数和(自身を含む): 52742160

約数和(自身を除く): 31193120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 14177, 28354, 56708, 70885, 113416, 141770, 226832, 269363, 283540, 538726, 567080, 1077452, 1134160, 1346815, 2154904, 2693630, 4309808, 5387260, 10774520, 21549040]

約数ペア:

[(1, 21549040), (2, 10774520), (4, 5387260), (5, 4309808), (8, 2693630), (10, 2154904), (16, 1346815), (19, 1134160), (20, 1077452), (38, 567080), (40, 538726), (76, 283540), (80, 269363), (95, 226832), (152, 141770), (190, 113416), (304, 70885), (380, 56708), (760, 28354), (1520, 14177)]