21740520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{7877}}^1$

素因数の和:7914

約数の個数: 64

約数和(自身を含む): 68065920

約数和(自身を除く): 46325400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 92, 115, 120, 138, 184, 230, 276, 345, 460, 552, 690, 920, 1380, 2760, 7877, 15754, 23631, 31508, 39385, 47262, 63016, 78770, 94524, 118155, 157540, 181171, 189048, 236310, 315080, 362342, 472620, 543513, 724684, 905855, 945240, 1087026, 1449368, 1811710, 2174052, 2717565, 3623420, 4348104, 5435130, 7246840, 10870260, 21740520]

約数ペア:

[(1, 21740520), (2, 10870260), (3, 7246840), (4, 5435130), (5, 4348104), (6, 3623420), (8, 2717565), (10, 2174052), (12, 1811710), (15, 1449368), (20, 1087026), (23, 945240), (24, 905855), (30, 724684), (40, 543513), (46, 472620), (60, 362342), (69, 315080), (92, 236310), (115, 189048), (120, 181171), (138, 157540), (184, 118155), (230, 94524), (276, 78770), (345, 63016), (460, 47262), (552, 39385), (690, 31508), (920, 23631), (1380, 15754), (2760, 7877)]