21152664

素因数分解:

$2^3\times 3^8\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:74

約数の個数: 144

約数和(自身を含む): 66131520

約数和(自身を除く): 44978856

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 31, 36, 39, 52, 54, 62, 72, 78, 81, 93, 104, 108, 117, 124, 156, 162, 186, 216, 234, 243, 248, 279, 312, 324, 351, 372, 403, 468, 486, 558, 648, 702, 729, 744, 806, 837, 936, 972, 1053, 1116, 1209, 1404, 1458, 1612, 1674, 1944, 2106, 2187, 2232, 2418, 2511, 2808, 2916, 3159, 3224, 3348, 3627, 4212, 4374, 4836, 5022, 5832, 6318, 6561, 6696, 7254, 7533, 8424, 8748, 9477, 9672, 10044, 10881, 12636, 13122, 14508, 15066, 17496, 18954, 20088, 21762, 22599, 25272, 26244, 28431, 29016, 30132, 32643, 37908, 43524, 45198, 52488, 56862, 60264, 65286, 67797, 75816, 85293, 87048, 90396, 97929, 113724, 130572, 135594, 170586, 180792, 195858, 203391, 227448, 261144, 271188, 293787, 341172, 391716, 406782, 542376, 587574, 682344, 783432, 813564, 881361, 1175148, 1627128, 1762722, 2350296, 2644083, 3525444, 5288166, 7050888, 10576332, 21152664]

約数ペア:

[(1, 21152664), (2, 10576332), (3, 7050888), (4, 5288166), (6, 3525444), (8, 2644083), (9, 2350296), (12, 1762722), (13, 1627128), (18, 1175148), (24, 881361), (26, 813564), (27, 783432), (31, 682344), (36, 587574), (39, 542376), (52, 406782), (54, 391716), (62, 341172), (72, 293787), (78, 271188), (81, 261144), (93, 227448), (104, 203391), (108, 195858), (117, 180792), (124, 170586), (156, 135594), (162, 130572), (186, 113724), (216, 97929), (234, 90396), (243, 87048), (248, 85293), (279, 75816), (312, 67797), (324, 65286), (351, 60264), (372, 56862), (403, 52488), (468, 45198), (486, 43524), (558, 37908), (648, 32643), (702, 30132), (729, 29016), (744, 28431), (806, 26244), (837, 25272), (936, 22599), (972, 21762), (1053, 20088), (1116, 18954), (1209, 17496), (1404, 15066), (1458, 14508), (1612, 13122), (1674, 12636), (1944, 10881), (2106, 10044), (2187, 9672), (2232, 9477), (2418, 8748), (2511, 8424), (2808, 7533), (2916, 7254), (3159, 6696), (3224, 6561), (3348, 6318), (3627, 5832), (4212, 5022), (4374, 4836)]