19862920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6449}}^1$

素因数の和:6478

約数の個数: 64

約数和(自身を含む): 55728000

約数和(自身を除く): 35865080

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6449, 12898, 25796, 32245, 45143, 51592, 64490, 70939, 90286, 128980, 141878, 180572, 225715, 257960, 283756, 354695, 361144, 451430, 496573, 567512, 709390, 902860, 993146, 1418780, 1805720, 1986292, 2482865, 2837560, 3972584, 4965730, 9931460, 19862920]

約数ペア:

[(1, 19862920), (2, 9931460), (4, 4965730), (5, 3972584), (7, 2837560), (8, 2482865), (10, 1986292), (11, 1805720), (14, 1418780), (20, 993146), (22, 902860), (28, 709390), (35, 567512), (40, 496573), (44, 451430), (55, 361144), (56, 354695), (70, 283756), (77, 257960), (88, 225715), (110, 180572), (140, 141878), (154, 128980), (220, 90286), (280, 70939), (308, 64490), (385, 51592), (440, 45143), (616, 32245), (770, 25796), (1540, 12898), (3080, 6449)]