81629440

素因数分解:

$2^8\times 5^1\times {\mathrm{63773}}^1$

素因数の和:63794

約数の個数: 36

約数和(自身を含む): 195531084

約数和(自身を除く): 113901644

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 63773, 127546, 255092, 318865, 510184, 637730, 1020368, 1275460, 2040736, 2550920, 4081472, 5101840, 8162944, 10203680, 16325888, 20407360, 40814720, 81629440]

約数ペア:

[(1, 81629440), (2, 40814720), (4, 20407360), (5, 16325888), (8, 10203680), (10, 8162944), (16, 5101840), (20, 4081472), (32, 2550920), (40, 2040736), (64, 1275460), (80, 1020368), (128, 637730), (160, 510184), (256, 318865), (320, 255092), (640, 127546), (1280, 63773)]