420401245

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{173}}^1$

素因数の和:342

約数の個数: 64

約数和(自身を含む): 616978944

約数和(自身を除く): 196577699

約数列:

[1, 5, 11, 17, 23, 55, 85, 113, 115, 173, 187, 253, 391, 565, 865, 935, 1243, 1265, 1903, 1921, 1955, 2599, 2941, 3979, 4301, 6215, 9515, 9605, 12995, 14705, 19549, 19895, 21131, 21505, 28589, 32351, 43769, 44183, 67643, 97745, 105655, 142945, 161755, 215039, 218845, 220915, 332333, 338215, 449627, 486013, 744073, 1075195, 1661665, 2248135, 2430065, 3655663, 3720365, 4945897, 7643659, 18278315, 24729485, 38218295, 84080249, 420401245]

約数ペア:

[(1, 420401245), (5, 84080249), (11, 38218295), (17, 24729485), (23, 18278315), (55, 7643659), (85, 4945897), (113, 3720365), (115, 3655663), (173, 2430065), (187, 2248135), (253, 1661665), (391, 1075195), (565, 744073), (865, 486013), (935, 449627), (1243, 338215), (1265, 332333), (1903, 220915), (1921, 218845), (1955, 215039), (2599, 161755), (2941, 142945), (3979, 105655), (4301, 97745), (6215, 67643), (9515, 44183), (9605, 43769), (12995, 32351), (14705, 28589), (19549, 21505), (19895, 21131)]