80990720

素因数分解:

$2^9\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1861}}^1$

素因数の和:1901

約数の個数: 80

約数和(自身を含む): 205721208

約数和(自身を除く): 124730488

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 512, 544, 640, 680, 1088, 1280, 1360, 1861, 2176, 2560, 2720, 3722, 4352, 5440, 7444, 8704, 9305, 10880, 14888, 18610, 21760, 29776, 31637, 37220, 43520, 59552, 63274, 74440, 119104, 126548, 148880, 158185, 238208, 253096, 297760, 316370, 476416, 506192, 595520, 632740, 952832, 1012384, 1191040, 1265480, 2024768, 2382080, 2530960, 4049536, 4764160, 5061920, 8099072, 10123840, 16198144, 20247680, 40495360, 80990720]

約数ペア:

[(1, 80990720), (2, 40495360), (4, 20247680), (5, 16198144), (8, 10123840), (10, 8099072), (16, 5061920), (17, 4764160), (20, 4049536), (32, 2530960), (34, 2382080), (40, 2024768), (64, 1265480), (68, 1191040), (80, 1012384), (85, 952832), (128, 632740), (136, 595520), (160, 506192), (170, 476416), (256, 316370), (272, 297760), (320, 253096), (340, 238208), (512, 158185), (544, 148880), (640, 126548), (680, 119104), (1088, 74440), (1280, 63274), (1360, 59552), (1861, 43520), (2176, 37220), (2560, 31637), (2720, 29776), (3722, 21760), (4352, 18610), (5440, 14888), (7444, 10880), (8704, 9305)]