21120176

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:143

約数の個数: 120

約数和(自身を含む): 54282240

約数和(自身を除く): 33162064

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 31, 44, 49, 56, 62, 77, 79, 88, 98, 112, 124, 154, 158, 176, 196, 217, 248, 308, 316, 341, 392, 434, 496, 539, 553, 616, 632, 682, 784, 868, 869, 1078, 1106, 1232, 1264, 1364, 1519, 1736, 1738, 2156, 2212, 2387, 2449, 2728, 3038, 3472, 3476, 3871, 4312, 4424, 4774, 4898, 5456, 6076, 6083, 6952, 7742, 8624, 8848, 9548, 9796, 12152, 12166, 13904, 15484, 16709, 17143, 19096, 19592, 24304, 24332, 26939, 30968, 33418, 34286, 38192, 39184, 42581, 48664, 53878, 61936, 66836, 68572, 85162, 97328, 107756, 120001, 133672, 137144, 170324, 188573, 215512, 240002, 267344, 274288, 340648, 377146, 431024, 480004, 681296, 754292, 960008, 1320011, 1508584, 1920016, 2640022, 3017168, 5280044, 10560088, 21120176]

約数ペア:

[(1, 21120176), (2, 10560088), (4, 5280044), (7, 3017168), (8, 2640022), (11, 1920016), (14, 1508584), (16, 1320011), (22, 960008), (28, 754292), (31, 681296), (44, 480004), (49, 431024), (56, 377146), (62, 340648), (77, 274288), (79, 267344), (88, 240002), (98, 215512), (112, 188573), (124, 170324), (154, 137144), (158, 133672), (176, 120001), (196, 107756), (217, 97328), (248, 85162), (308, 68572), (316, 66836), (341, 61936), (392, 53878), (434, 48664), (496, 42581), (539, 39184), (553, 38192), (616, 34286), (632, 33418), (682, 30968), (784, 26939), (868, 24332), (869, 24304), (1078, 19592), (1106, 19096), (1232, 17143), (1264, 16709), (1364, 15484), (1519, 13904), (1736, 12166), (1738, 12152), (2156, 9796), (2212, 9548), (2387, 8848), (2449, 8624), (2728, 7742), (3038, 6952), (3472, 6083), (3476, 6076), (3871, 5456), (4312, 4898), (4424, 4774)]