80961920

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{263}}^1$

素因数の和:332

約数の個数: 128

約数和(自身を含む): 214885440

約数和(自身を除く): 133923520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 37, 40, 52, 64, 65, 74, 80, 104, 128, 130, 148, 160, 185, 208, 260, 263, 296, 320, 370, 416, 481, 520, 526, 592, 640, 740, 832, 962, 1040, 1052, 1184, 1315, 1480, 1664, 1924, 2080, 2104, 2368, 2405, 2630, 2960, 3419, 3848, 4160, 4208, 4736, 4810, 5260, 5920, 6838, 7696, 8320, 8416, 9620, 9731, 10520, 11840, 13676, 15392, 16832, 17095, 19240, 19462, 21040, 23680, 27352, 30784, 33664, 34190, 38480, 38924, 42080, 48655, 54704, 61568, 68380, 76960, 77848, 84160, 97310, 109408, 126503, 136760, 153920, 155696, 168320, 194620, 218816, 253006, 273520, 307840, 311392, 389240, 437632, 506012, 547040, 622784, 632515, 778480, 1012024, 1094080, 1245568, 1265030, 1556960, 2024048, 2188160, 2530060, 3113920, 4048096, 5060120, 6227840, 8096192, 10120240, 16192384, 20240480, 40480960, 80961920]

約数ペア:

[(1, 80961920), (2, 40480960), (4, 20240480), (5, 16192384), (8, 10120240), (10, 8096192), (13, 6227840), (16, 5060120), (20, 4048096), (26, 3113920), (32, 2530060), (37, 2188160), (40, 2024048), (52, 1556960), (64, 1265030), (65, 1245568), (74, 1094080), (80, 1012024), (104, 778480), (128, 632515), (130, 622784), (148, 547040), (160, 506012), (185, 437632), (208, 389240), (260, 311392), (263, 307840), (296, 273520), (320, 253006), (370, 218816), (416, 194620), (481, 168320), (520, 155696), (526, 153920), (592, 136760), (640, 126503), (740, 109408), (832, 97310), (962, 84160), (1040, 77848), (1052, 76960), (1184, 68380), (1315, 61568), (1480, 54704), (1664, 48655), (1924, 42080), (2080, 38924), (2104, 38480), (2368, 34190), (2405, 33664), (2630, 30784), (2960, 27352), (3419, 23680), (3848, 21040), (4160, 19462), (4208, 19240), (4736, 17095), (4810, 16832), (5260, 15392), (5920, 13676), (6838, 11840), (7696, 10520), (8320, 9731), (8416, 9620)]