155211520

素因数分解:

$2^8\times 5^1\times {\mathrm{121259}}^1$

素因数の和:121280

約数の個数: 36

約数和(自身を含む): 371783160

約数和(自身を除く): 216571640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 121259, 242518, 485036, 606295, 970072, 1212590, 1940144, 2425180, 3880288, 4850360, 7760576, 9700720, 15521152, 19401440, 31042304, 38802880, 77605760, 155211520]

約数ペア:

[(1, 155211520), (2, 77605760), (4, 38802880), (5, 31042304), (8, 19401440), (10, 15521152), (16, 9700720), (20, 7760576), (32, 4850360), (40, 3880288), (64, 2425180), (80, 1940144), (128, 1212590), (160, 970072), (256, 606295), (320, 485036), (640, 242518), (1280, 121259)]