128315720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:247

約数の個数: 128

約数和(自身を含む): 329011200

約数和(自身を除く): 200695480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 29, 40, 52, 58, 65, 67, 104, 116, 127, 130, 134, 145, 232, 254, 260, 268, 290, 335, 377, 508, 520, 536, 580, 635, 670, 754, 871, 1016, 1160, 1270, 1340, 1508, 1651, 1742, 1885, 1943, 2540, 2680, 3016, 3302, 3484, 3683, 3770, 3886, 4355, 5080, 6604, 6968, 7366, 7540, 7772, 8255, 8509, 8710, 9715, 13208, 14732, 15080, 15544, 16510, 17018, 17420, 18415, 19430, 25259, 29464, 33020, 34036, 34840, 36830, 38860, 42545, 47879, 50518, 66040, 68072, 73660, 77720, 85090, 95758, 101036, 110617, 126295, 147320, 170180, 191516, 202072, 221234, 239395, 246761, 252590, 340360, 383032, 442468, 478790, 493522, 505180, 553085, 884936, 957580, 987044, 1010360, 1106170, 1233805, 1915160, 1974088, 2212340, 2467610, 3207893, 4424680, 4935220, 6415786, 9870440, 12831572, 16039465, 25663144, 32078930, 64157860, 128315720]

約数ペア:

[(1, 128315720), (2, 64157860), (4, 32078930), (5, 25663144), (8, 16039465), (10, 12831572), (13, 9870440), (20, 6415786), (26, 4935220), (29, 4424680), (40, 3207893), (52, 2467610), (58, 2212340), (65, 1974088), (67, 1915160), (104, 1233805), (116, 1106170), (127, 1010360), (130, 987044), (134, 957580), (145, 884936), (232, 553085), (254, 505180), (260, 493522), (268, 478790), (290, 442468), (335, 383032), (377, 340360), (508, 252590), (520, 246761), (536, 239395), (580, 221234), (635, 202072), (670, 191516), (754, 170180), (871, 147320), (1016, 126295), (1160, 110617), (1270, 101036), (1340, 95758), (1508, 85090), (1651, 77720), (1742, 73660), (1885, 68072), (1943, 66040), (2540, 50518), (2680, 47879), (3016, 42545), (3302, 38860), (3484, 36830), (3683, 34840), (3770, 34036), (3886, 33020), (4355, 29464), (5080, 25259), (6604, 19430), (6968, 18415), (7366, 17420), (7540, 17018), (7772, 16510), (8255, 15544), (8509, 15080), (8710, 14732), (9715, 13208)]