15981680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1$

素因数の和:175

約数の個数: 120

約数和(自身を含む): 44330496

約数和(自身を除く): 28348816

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 121, 127, 130, 143, 176, 208, 220, 242, 254, 260, 286, 440, 484, 508, 520, 572, 605, 635, 715, 880, 968, 1016, 1040, 1144, 1210, 1270, 1397, 1430, 1573, 1651, 1936, 2032, 2288, 2420, 2540, 2794, 2860, 3146, 3302, 4840, 5080, 5588, 5720, 6292, 6604, 6985, 7865, 8255, 9680, 10160, 11176, 11440, 12584, 13208, 13970, 15367, 15730, 16510, 18161, 22352, 25168, 26416, 27940, 30734, 31460, 33020, 36322, 55880, 61468, 62920, 66040, 72644, 76835, 90805, 111760, 122936, 125840, 132080, 145288, 153670, 181610, 199771, 245872, 290576, 307340, 363220, 399542, 614680, 726440, 799084, 998855, 1229360, 1452880, 1598168, 1997710, 3196336, 3995420, 7990840, 15981680]

約数ペア:

[(1, 15981680), (2, 7990840), (4, 3995420), (5, 3196336), (8, 1997710), (10, 1598168), (11, 1452880), (13, 1229360), (16, 998855), (20, 799084), (22, 726440), (26, 614680), (40, 399542), (44, 363220), (52, 307340), (55, 290576), (65, 245872), (80, 199771), (88, 181610), (104, 153670), (110, 145288), (121, 132080), (127, 125840), (130, 122936), (143, 111760), (176, 90805), (208, 76835), (220, 72644), (242, 66040), (254, 62920), (260, 61468), (286, 55880), (440, 36322), (484, 33020), (508, 31460), (520, 30734), (572, 27940), (605, 26416), (635, 25168), (715, 22352), (880, 18161), (968, 16510), (1016, 15730), (1040, 15367), (1144, 13970), (1210, 13208), (1270, 12584), (1397, 11440), (1430, 11176), (1573, 10160), (1651, 9680), (1936, 8255), (2032, 7865), (2288, 6985), (2420, 6604), (2540, 6292), (2794, 5720), (2860, 5588), (3146, 5080), (3302, 4840)]