28290840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{431}}^1\times {\mathrm{547}}^1$

素因数の和:992

約数の個数: 64

約数和(自身を含む): 85224960

約数和(自身を除く): 56934120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 431, 547, 862, 1094, 1293, 1641, 1724, 2155, 2188, 2586, 2735, 3282, 3448, 4310, 4376, 5172, 5470, 6465, 6564, 8205, 8620, 10344, 10940, 12930, 13128, 16410, 17240, 21880, 25860, 32820, 51720, 65640, 235757, 471514, 707271, 943028, 1178785, 1414542, 1886056, 2357570, 2829084, 3536355, 4715140, 5658168, 7072710, 9430280, 14145420, 28290840]

約数ペア:

[(1, 28290840), (2, 14145420), (3, 9430280), (4, 7072710), (5, 5658168), (6, 4715140), (8, 3536355), (10, 2829084), (12, 2357570), (15, 1886056), (20, 1414542), (24, 1178785), (30, 943028), (40, 707271), (60, 471514), (120, 235757), (431, 65640), (547, 51720), (862, 32820), (1094, 25860), (1293, 21880), (1641, 17240), (1724, 16410), (2155, 13128), (2188, 12930), (2586, 10940), (2735, 10344), (3282, 8620), (3448, 8205), (4310, 6564), (4376, 6465), (5172, 5470)]