20245984

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{509}}^1$

素因数の和:643

約数の個数: 48

約数和(自身を含む): 43953840

約数和(自身を除く): 23707856

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 113, 176, 226, 352, 452, 509, 904, 1018, 1243, 1808, 2036, 2486, 3616, 4072, 4972, 5599, 8144, 9944, 11198, 16288, 19888, 22396, 39776, 44792, 57517, 89584, 115034, 179168, 230068, 460136, 632687, 920272, 1265374, 1840544, 2530748, 5061496, 10122992, 20245984]

約数ペア:

[(1, 20245984), (2, 10122992), (4, 5061496), (8, 2530748), (11, 1840544), (16, 1265374), (22, 920272), (32, 632687), (44, 460136), (88, 230068), (113, 179168), (176, 115034), (226, 89584), (352, 57517), (452, 44792), (509, 39776), (904, 22396), (1018, 19888), (1243, 16288), (1808, 11198), (2036, 9944), (2486, 8144), (3616, 5599), (4072, 4972)]