20935912

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:178

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 22609688

約数列:

[1, 2, 4, 8, 29, 31, 41, 58, 62, 71, 82, 116, 124, 142, 164, 232, 248, 284, 328, 568, 899, 1189, 1271, 1798, 2059, 2201, 2378, 2542, 2911, 3596, 4118, 4402, 4756, 5084, 5822, 7192, 8236, 8804, 9512, 10168, 11644, 16472, 17608, 23288, 36859, 63829, 73718, 84419, 90241, 127658, 147436, 168838, 180482, 255316, 294872, 337676, 360964, 510632, 675352, 721928, 2616989, 5233978, 10467956, 20935912]

約数ペア:

[(1, 20935912), (2, 10467956), (4, 5233978), (8, 2616989), (29, 721928), (31, 675352), (41, 510632), (58, 360964), (62, 337676), (71, 294872), (82, 255316), (116, 180482), (124, 168838), (142, 147436), (164, 127658), (232, 90241), (248, 84419), (284, 73718), (328, 63829), (568, 36859), (899, 23288), (1189, 17608), (1271, 16472), (1798, 11644), (2059, 10168), (2201, 9512), (2378, 8804), (2542, 8236), (2911, 7192), (3596, 5822), (4118, 5084), (4402, 4756)]