21008328

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1$

素因数の和:219

約数の個数: 128

約数和(自身を含む): 63037440

約数和(自身を除く): 42029112

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 17, 22, 24, 31, 33, 34, 44, 51, 62, 66, 68, 88, 93, 102, 124, 132, 136, 151, 186, 187, 204, 248, 264, 302, 341, 372, 374, 408, 453, 527, 561, 604, 682, 744, 748, 906, 1023, 1054, 1122, 1208, 1364, 1496, 1581, 1661, 1812, 2046, 2108, 2244, 2567, 2728, 3162, 3322, 3624, 4092, 4216, 4488, 4681, 4983, 5134, 5797, 6324, 6644, 7701, 8184, 9362, 9966, 10268, 11594, 12648, 13288, 14043, 15402, 17391, 18724, 19932, 20536, 23188, 28086, 28237, 30804, 34782, 37448, 39864, 46376, 51491, 56172, 56474, 61608, 69564, 79577, 84711, 102982, 112344, 112948, 139128, 154473, 159154, 169422, 205964, 225896, 238731, 308946, 318308, 338844, 411928, 477462, 617892, 636616, 677688, 875347, 954924, 1235784, 1750694, 1909848, 2626041, 3501388, 5252082, 7002776, 10504164, 21008328]

約数ペア:

[(1, 21008328), (2, 10504164), (3, 7002776), (4, 5252082), (6, 3501388), (8, 2626041), (11, 1909848), (12, 1750694), (17, 1235784), (22, 954924), (24, 875347), (31, 677688), (33, 636616), (34, 617892), (44, 477462), (51, 411928), (62, 338844), (66, 318308), (68, 308946), (88, 238731), (93, 225896), (102, 205964), (124, 169422), (132, 159154), (136, 154473), (151, 139128), (186, 112948), (187, 112344), (204, 102982), (248, 84711), (264, 79577), (302, 69564), (341, 61608), (372, 56474), (374, 56172), (408, 51491), (453, 46376), (527, 39864), (561, 37448), (604, 34782), (682, 30804), (744, 28237), (748, 28086), (906, 23188), (1023, 20536), (1054, 19932), (1122, 18724), (1208, 17391), (1364, 15402), (1496, 14043), (1581, 13288), (1661, 12648), (1812, 11594), (2046, 10268), (2108, 9966), (2244, 9362), (2567, 8184), (2728, 7701), (3162, 6644), (3322, 6324), (3624, 5797), (4092, 5134), (4216, 4983), (4488, 4681)]