161921916

素因数分解:

$2^2\times 3^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1039}}^1$

素因数の和:1105

約数の個数: 120

約数和(自身を含む): 468628160

約数和(自身を除く): 306706244

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 37, 39, 52, 54, 74, 78, 81, 108, 111, 117, 148, 156, 162, 222, 234, 324, 333, 351, 444, 468, 481, 666, 702, 962, 999, 1039, 1053, 1332, 1404, 1443, 1924, 1998, 2078, 2106, 2886, 2997, 3117, 3996, 4156, 4212, 4329, 5772, 5994, 6234, 8658, 9351, 11988, 12468, 12987, 13507, 17316, 18702, 25974, 27014, 28053, 37404, 38443, 38961, 40521, 51948, 54028, 56106, 76886, 77922, 81042, 84159, 112212, 115329, 121563, 153772, 155844, 162084, 168318, 230658, 243126, 336636, 345987, 364689, 461316, 486252, 499759, 691974, 729378, 999518, 1037961, 1094067, 1383948, 1458756, 1499277, 1999036, 2075922, 2188134, 2998554, 3113883, 4151844, 4376268, 4497831, 5997108, 6227766, 8995662, 12455532, 13493493, 17991324, 26986986, 40480479, 53973972, 80960958, 161921916]

約数ペア:

[(1, 161921916), (2, 80960958), (3, 53973972), (4, 40480479), (6, 26986986), (9, 17991324), (12, 13493493), (13, 12455532), (18, 8995662), (26, 6227766), (27, 5997108), (36, 4497831), (37, 4376268), (39, 4151844), (52, 3113883), (54, 2998554), (74, 2188134), (78, 2075922), (81, 1999036), (108, 1499277), (111, 1458756), (117, 1383948), (148, 1094067), (156, 1037961), (162, 999518), (222, 729378), (234, 691974), (324, 499759), (333, 486252), (351, 461316), (444, 364689), (468, 345987), (481, 336636), (666, 243126), (702, 230658), (962, 168318), (999, 162084), (1039, 155844), (1053, 153772), (1332, 121563), (1404, 115329), (1443, 112212), (1924, 84159), (1998, 81042), (2078, 77922), (2106, 76886), (2886, 56106), (2997, 54028), (3117, 51948), (3996, 40521), (4156, 38961), (4212, 38443), (4329, 37404), (5772, 28053), (5994, 27014), (6234, 25974), (8658, 18702), (9351, 17316), (11988, 13507), (12468, 12987)]