20757870

素因数分解:

$2^1\times 3^4\times 5^1\times 7^2\times {\mathrm{523}}^1$

素因数の和:556

約数の個数: 120

約数和(自身を含む): 65052504

約数和(自身を除く): 44294634

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 49, 54, 63, 70, 81, 90, 98, 105, 126, 135, 147, 162, 189, 210, 245, 270, 294, 315, 378, 405, 441, 490, 523, 567, 630, 735, 810, 882, 945, 1046, 1134, 1323, 1470, 1569, 1890, 2205, 2615, 2646, 2835, 3138, 3661, 3969, 4410, 4707, 5230, 5670, 6615, 7322, 7845, 7938, 9414, 10983, 13230, 14121, 15690, 18305, 19845, 21966, 23535, 25627, 28242, 32949, 36610, 39690, 42363, 47070, 51254, 54915, 65898, 70605, 76881, 84726, 98847, 109830, 128135, 141210, 153762, 164745, 197694, 211815, 230643, 256270, 296541, 329490, 384405, 423630, 461286, 494235, 593082, 691929, 768810, 988470, 1153215, 1383858, 1482705, 2075787, 2306430, 2965410, 3459645, 4151574, 6919290, 10378935, 20757870]

約数ペア:

[(1, 20757870), (2, 10378935), (3, 6919290), (5, 4151574), (6, 3459645), (7, 2965410), (9, 2306430), (10, 2075787), (14, 1482705), (15, 1383858), (18, 1153215), (21, 988470), (27, 768810), (30, 691929), (35, 593082), (42, 494235), (45, 461286), (49, 423630), (54, 384405), (63, 329490), (70, 296541), (81, 256270), (90, 230643), (98, 211815), (105, 197694), (126, 164745), (135, 153762), (147, 141210), (162, 128135), (189, 109830), (210, 98847), (245, 84726), (270, 76881), (294, 70605), (315, 65898), (378, 54915), (405, 51254), (441, 47070), (490, 42363), (523, 39690), (567, 36610), (630, 32949), (735, 28242), (810, 25627), (882, 23535), (945, 21966), (1046, 19845), (1134, 18305), (1323, 15690), (1470, 14121), (1569, 13230), (1890, 10983), (2205, 9414), (2615, 7938), (2646, 7845), (2835, 7322), (3138, 6615), (3661, 5670), (3969, 5230), (4410, 4707)]