1390193840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{16661}}^1$

素因数の和:16830

約数の個数: 80

約数和(自身を含む): 3718958400

約数和(自身を除く): 2328764560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 149, 280, 298, 560, 596, 745, 1043, 1192, 1490, 2086, 2384, 2980, 4172, 5215, 5960, 8344, 10430, 11920, 16661, 16688, 20860, 33322, 41720, 66644, 83305, 83440, 116627, 133288, 166610, 233254, 266576, 333220, 466508, 583135, 666440, 933016, 1166270, 1332880, 1866032, 2332540, 2482489, 4665080, 4964978, 9330160, 9929956, 12412445, 17377423, 19859912, 24824890, 34754846, 39719824, 49649780, 69509692, 86887115, 99299560, 139019384, 173774230, 198599120, 278038768, 347548460, 695096920, 1390193840]

約数ペア:

[(1, 1390193840), (2, 695096920), (4, 347548460), (5, 278038768), (7, 198599120), (8, 173774230), (10, 139019384), (14, 99299560), (16, 86887115), (20, 69509692), (28, 49649780), (35, 39719824), (40, 34754846), (56, 24824890), (70, 19859912), (80, 17377423), (112, 12412445), (140, 9929956), (149, 9330160), (280, 4964978), (298, 4665080), (560, 2482489), (596, 2332540), (745, 1866032), (1043, 1332880), (1192, 1166270), (1490, 933016), (2086, 666440), (2384, 583135), (2980, 466508), (4172, 333220), (5215, 266576), (5960, 233254), (8344, 166610), (10430, 133288), (11920, 116627), (16661, 83440), (16688, 83305), (20860, 66644), (33322, 41720)]