128551280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{661}}^1$

素因数の和:715

約数の個数: 160

約数和(自身を含む): 372351168

約数和(自身を除く): 243799888

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 17, 20, 22, 26, 34, 40, 44, 52, 55, 65, 68, 80, 85, 88, 104, 110, 130, 136, 143, 170, 176, 187, 208, 220, 221, 260, 272, 286, 340, 374, 440, 442, 520, 572, 661, 680, 715, 748, 880, 884, 935, 1040, 1105, 1144, 1322, 1360, 1430, 1496, 1768, 1870, 2210, 2288, 2431, 2644, 2860, 2992, 3305, 3536, 3740, 4420, 4862, 5288, 5720, 6610, 7271, 7480, 8593, 8840, 9724, 10576, 11237, 11440, 12155, 13220, 14542, 14960, 17186, 17680, 19448, 22474, 24310, 26440, 29084, 34372, 36355, 38896, 42965, 44948, 48620, 52880, 56185, 58168, 68744, 72710, 85930, 89896, 94523, 97240, 112370, 116336, 123607, 137488, 145420, 146081, 171860, 179792, 189046, 194480, 224740, 247214, 290840, 292162, 343720, 378092, 449480, 472615, 494428, 581680, 584324, 618035, 687440, 730405, 756184, 898960, 945230, 988856, 1168648, 1236070, 1460810, 1512368, 1606891, 1890460, 1977712, 2337296, 2472140, 2921620, 3213782, 3780920, 4944280, 5843240, 6427564, 7561840, 8034455, 9888560, 11686480, 12855128, 16068910, 25710256, 32137820, 64275640, 128551280]

約数ペア:

[(1, 128551280), (2, 64275640), (4, 32137820), (5, 25710256), (8, 16068910), (10, 12855128), (11, 11686480), (13, 9888560), (16, 8034455), (17, 7561840), (20, 6427564), (22, 5843240), (26, 4944280), (34, 3780920), (40, 3213782), (44, 2921620), (52, 2472140), (55, 2337296), (65, 1977712), (68, 1890460), (80, 1606891), (85, 1512368), (88, 1460810), (104, 1236070), (110, 1168648), (130, 988856), (136, 945230), (143, 898960), (170, 756184), (176, 730405), (187, 687440), (208, 618035), (220, 584324), (221, 581680), (260, 494428), (272, 472615), (286, 449480), (340, 378092), (374, 343720), (440, 292162), (442, 290840), (520, 247214), (572, 224740), (661, 194480), (680, 189046), (715, 179792), (748, 171860), (880, 146081), (884, 145420), (935, 137488), (1040, 123607), (1105, 116336), (1144, 112370), (1322, 97240), (1360, 94523), (1430, 89896), (1496, 85930), (1768, 72710), (1870, 68744), (2210, 58168), (2288, 56185), (2431, 52880), (2644, 48620), (2860, 44948), (2992, 42965), (3305, 38896), (3536, 36355), (3740, 34372), (4420, 29084), (4862, 26440), (5288, 24310), (5720, 22474), (6610, 19448), (7271, 17680), (7480, 17186), (8593, 14960), (8840, 14542), (9724, 13220), (10576, 12155), (11237, 11440)]