81427360

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1$

素因数の和:183

約数の個数: 192

約数和(自身を含む): 239500800

約数和(自身を除く): 158073440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 29, 32, 35, 40, 46, 56, 58, 70, 80, 92, 109, 112, 115, 116, 140, 145, 160, 161, 184, 203, 218, 224, 230, 232, 280, 290, 322, 368, 406, 436, 460, 464, 545, 560, 580, 644, 667, 736, 763, 805, 812, 872, 920, 928, 1015, 1090, 1120, 1160, 1288, 1334, 1526, 1610, 1624, 1744, 1840, 2030, 2180, 2320, 2507, 2576, 2668, 3052, 3161, 3220, 3248, 3335, 3488, 3680, 3815, 4060, 4360, 4640, 4669, 5014, 5152, 5336, 6104, 6322, 6440, 6496, 6670, 7630, 8120, 8720, 9338, 10028, 10672, 12208, 12535, 12644, 12880, 13340, 15260, 15805, 16240, 17440, 17549, 18676, 20056, 21344, 22127, 23345, 24416, 25070, 25288, 25760, 26680, 30520, 31610, 32480, 35098, 37352, 40112, 44254, 46690, 50140, 50576, 53360, 61040, 63220, 70196, 72703, 74704, 80224, 87745, 88508, 93380, 100280, 101152, 106720, 110635, 122080, 126440, 140392, 145406, 149408, 175490, 177016, 186760, 200560, 221270, 252880, 280784, 290812, 350980, 354032, 363515, 373520, 401120, 442540, 505760, 508921, 561568, 581624, 701960, 708064, 727030, 747040, 885080, 1017842, 1163248, 1403920, 1454060, 1770160, 2035684, 2326496, 2544605, 2807840, 2908120, 3540320, 4071368, 5089210, 5816240, 8142736, 10178420, 11632480, 16285472, 20356840, 40713680, 81427360]

約数ペア:

[(1, 81427360), (2, 40713680), (4, 20356840), (5, 16285472), (7, 11632480), (8, 10178420), (10, 8142736), (14, 5816240), (16, 5089210), (20, 4071368), (23, 3540320), (28, 2908120), (29, 2807840), (32, 2544605), (35, 2326496), (40, 2035684), (46, 1770160), (56, 1454060), (58, 1403920), (70, 1163248), (80, 1017842), (92, 885080), (109, 747040), (112, 727030), (115, 708064), (116, 701960), (140, 581624), (145, 561568), (160, 508921), (161, 505760), (184, 442540), (203, 401120), (218, 373520), (224, 363515), (230, 354032), (232, 350980), (280, 290812), (290, 280784), (322, 252880), (368, 221270), (406, 200560), (436, 186760), (460, 177016), (464, 175490), (545, 149408), (560, 145406), (580, 140392), (644, 126440), (667, 122080), (736, 110635), (763, 106720), (805, 101152), (812, 100280), (872, 93380), (920, 88508), (928, 87745), (1015, 80224), (1090, 74704), (1120, 72703), (1160, 70196), (1288, 63220), (1334, 61040), (1526, 53360), (1610, 50576), (1624, 50140), (1744, 46690), (1840, 44254), (2030, 40112), (2180, 37352), (2320, 35098), (2507, 32480), (2576, 31610), (2668, 30520), (3052, 26680), (3161, 25760), (3220, 25288), (3248, 25070), (3335, 24416), (3488, 23345), (3680, 22127), (3815, 21344), (4060, 20056), (4360, 18676), (4640, 17549), (4669, 17440), (5014, 16240), (5152, 15805), (5336, 15260), (6104, 13340), (6322, 12880), (6440, 12644), (6496, 12535), (6670, 12208), (7630, 10672), (8120, 10028), (8720, 9338)]