21023440

素因数分解:

$2^4\times 5^1\times {\mathrm{317}}^1\times {\mathrm{829}}^1$

素因数の和:1159

約数の個数: 40

約数和(自身を含む): 49092840

約数和(自身を除く): 28069400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 317, 634, 829, 1268, 1585, 1658, 2536, 3170, 3316, 4145, 5072, 6340, 6632, 8290, 12680, 13264, 16580, 25360, 33160, 66320, 262793, 525586, 1051172, 1313965, 2102344, 2627930, 4204688, 5255860, 10511720, 21023440]

約数ペア:

[(1, 21023440), (2, 10511720), (4, 5255860), (5, 4204688), (8, 2627930), (10, 2102344), (16, 1313965), (20, 1051172), (40, 525586), (80, 262793), (317, 66320), (634, 33160), (829, 25360), (1268, 16580), (1585, 13264), (1658, 12680), (2536, 8290), (3170, 6632), (3316, 6340), (4145, 5072)]