21238656

素因数分解:

$2^7\times 3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:148

約数の個数: 128

約数和(自身を含む): 61689600

約数和(自身を除く): 40450944

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 19, 24, 32, 38, 41, 48, 57, 64, 71, 76, 82, 96, 114, 123, 128, 142, 152, 164, 192, 213, 228, 246, 284, 304, 328, 384, 426, 456, 492, 568, 608, 656, 779, 852, 912, 984, 1136, 1216, 1312, 1349, 1558, 1704, 1824, 1968, 2272, 2337, 2432, 2624, 2698, 2911, 3116, 3408, 3648, 3936, 4047, 4544, 4674, 5248, 5396, 5822, 6232, 6816, 7296, 7872, 8094, 8733, 9088, 9348, 10792, 11644, 12464, 13632, 15744, 16188, 17466, 18696, 21584, 23288, 24928, 27264, 32376, 34932, 37392, 43168, 46576, 49856, 55309, 64752, 69864, 74784, 86336, 93152, 99712, 110618, 129504, 139728, 149568, 165927, 172672, 186304, 221236, 259008, 279456, 299136, 331854, 372608, 442472, 518016, 558912, 663708, 884944, 1117824, 1327416, 1769888, 2654832, 3539776, 5309664, 7079552, 10619328, 21238656]

約数ペア:

[(1, 21238656), (2, 10619328), (3, 7079552), (4, 5309664), (6, 3539776), (8, 2654832), (12, 1769888), (16, 1327416), (19, 1117824), (24, 884944), (32, 663708), (38, 558912), (41, 518016), (48, 442472), (57, 372608), (64, 331854), (71, 299136), (76, 279456), (82, 259008), (96, 221236), (114, 186304), (123, 172672), (128, 165927), (142, 149568), (152, 139728), (164, 129504), (192, 110618), (213, 99712), (228, 93152), (246, 86336), (284, 74784), (304, 69864), (328, 64752), (384, 55309), (426, 49856), (456, 46576), (492, 43168), (568, 37392), (608, 34932), (656, 32376), (779, 27264), (852, 24928), (912, 23288), (984, 21584), (1136, 18696), (1216, 17466), (1312, 16188), (1349, 15744), (1558, 13632), (1704, 12464), (1824, 11644), (1968, 10792), (2272, 9348), (2337, 9088), (2432, 8733), (2624, 8094), (2698, 7872), (2911, 7296), (3116, 6816), (3408, 6232), (3648, 5822), (3936, 5396), (4047, 5248), (4544, 4674)]