21988080

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{30539}}^1$

素因数の和:30558

約数の個数: 60

約数和(自身を含む): 73845720

約数和(自身を除く): 51857640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 30539, 61078, 91617, 122156, 152695, 183234, 244312, 274851, 305390, 366468, 458085, 488624, 549702, 610780, 732936, 916170, 1099404, 1221560, 1374255, 1465872, 1832340, 2198808, 2443120, 2748510, 3664680, 4397616, 5497020, 7329360, 10994040, 21988080]

約数ペア:

[(1, 21988080), (2, 10994040), (3, 7329360), (4, 5497020), (5, 4397616), (6, 3664680), (8, 2748510), (9, 2443120), (10, 2198808), (12, 1832340), (15, 1465872), (16, 1374255), (18, 1221560), (20, 1099404), (24, 916170), (30, 732936), (36, 610780), (40, 549702), (45, 488624), (48, 458085), (60, 366468), (72, 305390), (80, 274851), (90, 244312), (120, 183234), (144, 152695), (180, 122156), (240, 91617), (360, 61078), (720, 30539)]