21239712

素因数分解:

$2^5\times 3^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:124

約数の個数: 192

約数和(自身を含む): 69995520

約数和(自身を除く): 48755808

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 31, 32, 36, 39, 48, 52, 54, 61, 62, 72, 78, 93, 96, 104, 108, 117, 122, 124, 144, 156, 183, 186, 208, 216, 234, 244, 248, 279, 288, 312, 351, 366, 372, 403, 416, 432, 468, 488, 496, 549, 558, 624, 702, 732, 744, 793, 806, 837, 864, 936, 976, 992, 1098, 1116, 1209, 1248, 1404, 1464, 1488, 1586, 1612, 1647, 1674, 1872, 1891, 1952, 2196, 2232, 2379, 2418, 2808, 2928, 2976, 3172, 3224, 3294, 3348, 3627, 3744, 3782, 4392, 4464, 4758, 4836, 5616, 5673, 5856, 6344, 6448, 6588, 6696, 7137, 7254, 7564, 8784, 8928, 9516, 9672, 10881, 11232, 11346, 12688, 12896, 13176, 13392, 14274, 14508, 15128, 17019, 17568, 19032, 19344, 21411, 21762, 22692, 24583, 25376, 26352, 26784, 28548, 29016, 30256, 34038, 38064, 38688, 42822, 43524, 45384, 49166, 51057, 52704, 57096, 58032, 60512, 68076, 73749, 76128, 85644, 87048, 90768, 98332, 102114, 114192, 116064, 136152, 147498, 171288, 174096, 181536, 196664, 204228, 221247, 228384, 272304, 294996, 342576, 348192, 393328, 408456, 442494, 544608, 589992, 663741, 685152, 786656, 816912, 884988, 1179984, 1327482, 1633824, 1769976, 2359968, 2654964, 3539952, 5309928, 7079904, 10619856, 21239712]

約数ペア:

[(1, 21239712), (2, 10619856), (3, 7079904), (4, 5309928), (6, 3539952), (8, 2654964), (9, 2359968), (12, 1769976), (13, 1633824), (16, 1327482), (18, 1179984), (24, 884988), (26, 816912), (27, 786656), (31, 685152), (32, 663741), (36, 589992), (39, 544608), (48, 442494), (52, 408456), (54, 393328), (61, 348192), (62, 342576), (72, 294996), (78, 272304), (93, 228384), (96, 221247), (104, 204228), (108, 196664), (117, 181536), (122, 174096), (124, 171288), (144, 147498), (156, 136152), (183, 116064), (186, 114192), (208, 102114), (216, 98332), (234, 90768), (244, 87048), (248, 85644), (279, 76128), (288, 73749), (312, 68076), (351, 60512), (366, 58032), (372, 57096), (403, 52704), (416, 51057), (432, 49166), (468, 45384), (488, 43524), (496, 42822), (549, 38688), (558, 38064), (624, 34038), (702, 30256), (732, 29016), (744, 28548), (793, 26784), (806, 26352), (837, 25376), (864, 24583), (936, 22692), (976, 21762), (992, 21411), (1098, 19344), (1116, 19032), (1209, 17568), (1248, 17019), (1404, 15128), (1464, 14508), (1488, 14274), (1586, 13392), (1612, 13176), (1647, 12896), (1674, 12688), (1872, 11346), (1891, 11232), (1952, 10881), (2196, 9672), (2232, 9516), (2379, 8928), (2418, 8784), (2808, 7564), (2928, 7254), (2976, 7137), (3172, 6696), (3224, 6588), (3294, 6448), (3348, 6344), (3627, 5856), (3744, 5673), (3782, 5616), (4392, 4836), (4464, 4758)]