1978855120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2248699}}^1$

素因数の和:2248723

約数の個数: 40

約数和(自身を含む): 5019098400

約数和(自身を除く): 3040243280

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 2248699, 4497398, 8994796, 11243495, 17989592, 22486990, 24735689, 35979184, 44973980, 49471378, 89947960, 98942756, 123678445, 179895920, 197885512, 247356890, 395771024, 494713780, 989427560, 1978855120]

約数ペア:

[(1, 1978855120), (2, 989427560), (4, 494713780), (5, 395771024), (8, 247356890), (10, 197885512), (11, 179895920), (16, 123678445), (20, 98942756), (22, 89947960), (40, 49471378), (44, 44973980), (55, 35979184), (80, 24735689), (88, 22486990), (110, 17989592), (176, 11243495), (220, 8994796), (440, 4497398), (880, 2248699)]