20278552

素因数分解:

$2^3\times 7^2\times {\mathrm{17}}^2\times {\mathrm{179}}^1$

素因数の和:233

約数の個数: 72

約数和(自身を含む): 47247300

約数和(自身を除く): 26968748

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 49, 56, 68, 98, 119, 136, 179, 196, 238, 289, 358, 392, 476, 578, 716, 833, 952, 1156, 1253, 1432, 1666, 2023, 2312, 2506, 3043, 3332, 4046, 5012, 6086, 6664, 8092, 8771, 10024, 12172, 14161, 16184, 17542, 21301, 24344, 28322, 35084, 42602, 51731, 56644, 70168, 85204, 103462, 113288, 149107, 170408, 206924, 298214, 362117, 413848, 596428, 724234, 1192856, 1448468, 2534819, 2896936, 5069638, 10139276, 20278552]

約数ペア:

[(1, 20278552), (2, 10139276), (4, 5069638), (7, 2896936), (8, 2534819), (14, 1448468), (17, 1192856), (28, 724234), (34, 596428), (49, 413848), (56, 362117), (68, 298214), (98, 206924), (119, 170408), (136, 149107), (179, 113288), (196, 103462), (238, 85204), (289, 70168), (358, 56644), (392, 51731), (476, 42602), (578, 35084), (716, 28322), (833, 24344), (952, 21301), (1156, 17542), (1253, 16184), (1432, 14161), (1666, 12172), (2023, 10024), (2312, 8771), (2506, 8092), (3043, 6664), (3332, 6086), (4046, 5012)]