81801280

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1367}}^1$

素因数の和:1412

約数の個数: 112

約数和(自身を含む): 225161856

約数和(自身を除く): 143360576

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 32, 34, 40, 44, 55, 64, 68, 80, 85, 88, 110, 136, 160, 170, 176, 187, 220, 272, 320, 340, 352, 374, 440, 544, 680, 704, 748, 880, 935, 1088, 1360, 1367, 1496, 1760, 1870, 2720, 2734, 2992, 3520, 3740, 5440, 5468, 5984, 6835, 7480, 10936, 11968, 13670, 14960, 15037, 21872, 23239, 27340, 29920, 30074, 43744, 46478, 54680, 59840, 60148, 75185, 87488, 92956, 109360, 116195, 120296, 150370, 185912, 218720, 232390, 240592, 255629, 300740, 371824, 437440, 464780, 481184, 511258, 601480, 743648, 929560, 962368, 1022516, 1202960, 1278145, 1487296, 1859120, 2045032, 2405920, 2556290, 3718240, 4090064, 4811840, 5112580, 7436480, 8180128, 10225160, 16360256, 20450320, 40900640, 81801280]

約数ペア:

[(1, 81801280), (2, 40900640), (4, 20450320), (5, 16360256), (8, 10225160), (10, 8180128), (11, 7436480), (16, 5112580), (17, 4811840), (20, 4090064), (22, 3718240), (32, 2556290), (34, 2405920), (40, 2045032), (44, 1859120), (55, 1487296), (64, 1278145), (68, 1202960), (80, 1022516), (85, 962368), (88, 929560), (110, 743648), (136, 601480), (160, 511258), (170, 481184), (176, 464780), (187, 437440), (220, 371824), (272, 300740), (320, 255629), (340, 240592), (352, 232390), (374, 218720), (440, 185912), (544, 150370), (680, 120296), (704, 116195), (748, 109360), (880, 92956), (935, 87488), (1088, 75185), (1360, 60148), (1367, 59840), (1496, 54680), (1760, 46478), (1870, 43744), (2720, 30074), (2734, 29920), (2992, 27340), (3520, 23239), (3740, 21872), (5440, 15037), (5468, 14960), (5984, 13670), (6835, 11968), (7480, 10936)]