19208960

素因数分解:

$2^8\times 5^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:413

約数の個数: 72

約数和(自身を含む): 47216400

約数和(自身を除く): 28007440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 256, 320, 344, 349, 430, 640, 688, 698, 860, 1280, 1376, 1396, 1720, 1745, 2752, 2792, 3440, 3490, 5504, 5584, 6880, 6980, 11008, 11168, 13760, 13960, 15007, 22336, 27520, 27920, 30014, 44672, 55040, 55840, 60028, 75035, 89344, 111680, 120056, 150070, 223360, 240112, 300140, 446720, 480224, 600280, 960448, 1200560, 1920896, 2401120, 3841792, 4802240, 9604480, 19208960]

約数ペア:

[(1, 19208960), (2, 9604480), (4, 4802240), (5, 3841792), (8, 2401120), (10, 1920896), (16, 1200560), (20, 960448), (32, 600280), (40, 480224), (43, 446720), (64, 300140), (80, 240112), (86, 223360), (128, 150070), (160, 120056), (172, 111680), (215, 89344), (256, 75035), (320, 60028), (344, 55840), (349, 55040), (430, 44672), (640, 30014), (688, 27920), (698, 27520), (860, 22336), (1280, 15007), (1376, 13960), (1396, 13760), (1720, 11168), (1745, 11008), (2752, 6980), (2792, 6880), (3440, 5584), (3490, 5504)]