19310720

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1$

素因数の和:254

約数の個数: 128

約数和(自身を含む): 54492480

約数和(自身を除く): 35181760

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 64, 65, 80, 88, 104, 110, 128, 130, 143, 160, 176, 208, 211, 220, 260, 286, 320, 352, 416, 422, 440, 520, 572, 640, 704, 715, 832, 844, 880, 1040, 1055, 1144, 1408, 1430, 1664, 1688, 1760, 2080, 2110, 2288, 2321, 2743, 2860, 3376, 3520, 4160, 4220, 4576, 4642, 5486, 5720, 6752, 7040, 8320, 8440, 9152, 9284, 10972, 11440, 11605, 13504, 13715, 16880, 18304, 18568, 21944, 22880, 23210, 27008, 27430, 30173, 33760, 37136, 43888, 45760, 46420, 54860, 60346, 67520, 74272, 87776, 91520, 92840, 109720, 120692, 135040, 148544, 150865, 175552, 185680, 219440, 241384, 297088, 301730, 351104, 371360, 438880, 482768, 603460, 742720, 877760, 965536, 1206920, 1485440, 1755520, 1931072, 2413840, 3862144, 4827680, 9655360, 19310720]

約数ペア:

[(1, 19310720), (2, 9655360), (4, 4827680), (5, 3862144), (8, 2413840), (10, 1931072), (11, 1755520), (13, 1485440), (16, 1206920), (20, 965536), (22, 877760), (26, 742720), (32, 603460), (40, 482768), (44, 438880), (52, 371360), (55, 351104), (64, 301730), (65, 297088), (80, 241384), (88, 219440), (104, 185680), (110, 175552), (128, 150865), (130, 148544), (143, 135040), (160, 120692), (176, 109720), (208, 92840), (211, 91520), (220, 87776), (260, 74272), (286, 67520), (320, 60346), (352, 54860), (416, 46420), (422, 45760), (440, 43888), (520, 37136), (572, 33760), (640, 30173), (704, 27430), (715, 27008), (832, 23210), (844, 22880), (880, 21944), (1040, 18568), (1055, 18304), (1144, 16880), (1408, 13715), (1430, 13504), (1664, 11605), (1688, 11440), (1760, 10972), (2080, 9284), (2110, 9152), (2288, 8440), (2321, 8320), (2743, 7040), (2860, 6752), (3376, 5720), (3520, 5486), (4160, 4642), (4220, 4576)]