80851840

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:208

約数の個数: 128

約数和(自身を含む): 208692000

約数和(自身を除く): 127840160

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 61, 64, 76, 80, 95, 109, 122, 128, 152, 160, 190, 218, 244, 304, 305, 320, 380, 436, 488, 545, 608, 610, 640, 760, 872, 976, 1090, 1159, 1216, 1220, 1520, 1744, 1952, 2071, 2180, 2318, 2432, 2440, 3040, 3488, 3904, 4142, 4360, 4636, 4880, 5795, 6080, 6649, 6976, 7808, 8284, 8720, 9272, 9760, 10355, 11590, 12160, 13298, 13952, 16568, 17440, 18544, 19520, 20710, 23180, 26596, 33136, 33245, 34880, 37088, 39040, 41420, 46360, 53192, 66272, 66490, 69760, 74176, 82840, 92720, 106384, 126331, 132544, 132980, 148352, 165680, 185440, 212768, 252662, 265088, 265960, 331360, 370880, 425536, 505324, 531920, 631655, 662720, 741760, 851072, 1010648, 1063840, 1263310, 1325440, 2021296, 2127680, 2526620, 4042592, 4255360, 5053240, 8085184, 10106480, 16170368, 20212960, 40425920, 80851840]

約数ペア:

[(1, 80851840), (2, 40425920), (4, 20212960), (5, 16170368), (8, 10106480), (10, 8085184), (16, 5053240), (19, 4255360), (20, 4042592), (32, 2526620), (38, 2127680), (40, 2021296), (61, 1325440), (64, 1263310), (76, 1063840), (80, 1010648), (95, 851072), (109, 741760), (122, 662720), (128, 631655), (152, 531920), (160, 505324), (190, 425536), (218, 370880), (244, 331360), (304, 265960), (305, 265088), (320, 252662), (380, 212768), (436, 185440), (488, 165680), (545, 148352), (608, 132980), (610, 132544), (640, 126331), (760, 106384), (872, 92720), (976, 82840), (1090, 74176), (1159, 69760), (1216, 66490), (1220, 66272), (1520, 53192), (1744, 46360), (1952, 41420), (2071, 39040), (2180, 37088), (2318, 34880), (2432, 33245), (2440, 33136), (3040, 26596), (3488, 23180), (3904, 20710), (4142, 19520), (4360, 18544), (4636, 17440), (4880, 16568), (5795, 13952), (6080, 13298), (6649, 12160), (6976, 11590), (7808, 10355), (8284, 9760), (8720, 9272)]