1640640

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{1709}}^1$

素因数の和:1729

約数の個数: 56

約数和(自身を含む): 5212080

約数和(自身を除く): 3571440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 160, 192, 240, 320, 480, 960, 1709, 3418, 5127, 6836, 8545, 10254, 13672, 17090, 20508, 25635, 27344, 34180, 41016, 51270, 54688, 68360, 82032, 102540, 109376, 136720, 164064, 205080, 273440, 328128, 410160, 546880, 820320, 1640640]

約数ペア:

[(1, 1640640), (2, 820320), (3, 546880), (4, 410160), (5, 328128), (6, 273440), (8, 205080), (10, 164064), (12, 136720), (15, 109376), (16, 102540), (20, 82032), (24, 68360), (30, 54688), (32, 51270), (40, 41016), (48, 34180), (60, 27344), (64, 25635), (80, 20508), (96, 17090), (120, 13672), (160, 10254), (192, 8545), (240, 6836), (320, 5127), (480, 3418), (960, 1709)]