1456720

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:283

約数の個数: 40

約数和(自身を含む): 3437280

約数和(自身を除く): 1980560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 139, 262, 278, 524, 556, 655, 695, 1048, 1112, 1310, 1390, 2096, 2224, 2620, 2780, 5240, 5560, 10480, 11120, 18209, 36418, 72836, 91045, 145672, 182090, 291344, 364180, 728360, 1456720]

約数ペア:

[(1, 1456720), (2, 728360), (4, 364180), (5, 291344), (8, 182090), (10, 145672), (16, 91045), (20, 72836), (40, 36418), (80, 18209), (131, 11120), (139, 10480), (262, 5560), (278, 5240), (524, 2780), (556, 2620), (655, 2224), (695, 2096), (1048, 1390), (1112, 1310)]