2177220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{277}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 6164928

約数和(自身を除く): 3987708

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 131, 262, 277, 393, 524, 554, 655, 786, 831, 1108, 1310, 1385, 1572, 1662, 1965, 2620, 2770, 3324, 3930, 4155, 5540, 7860, 8310, 16620, 36287, 72574, 108861, 145148, 181435, 217722, 362870, 435444, 544305, 725740, 1088610, 2177220]

約数ペア:

[(1, 2177220), (2, 1088610), (3, 725740), (4, 544305), (5, 435444), (6, 362870), (10, 217722), (12, 181435), (15, 145148), (20, 108861), (30, 72574), (60, 36287), (131, 16620), (262, 8310), (277, 7860), (393, 5540), (524, 4155), (554, 3930), (655, 3324), (786, 2770), (831, 2620), (1108, 1965), (1310, 1662), (1385, 1572)]