1891840

素因数分解:

$2^9\times 5^1\times {\mathrm{739}}^1$

素因数の和:762

約数の個数: 40

約数和(自身を含む): 4542120

約数和(自身を除く): 2650280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 739, 1280, 1478, 2560, 2956, 3695, 5912, 7390, 11824, 14780, 23648, 29560, 47296, 59120, 94592, 118240, 189184, 236480, 378368, 472960, 945920, 1891840]

約数ペア:

[(1, 1891840), (2, 945920), (4, 472960), (5, 378368), (8, 236480), (10, 189184), (16, 118240), (20, 94592), (32, 59120), (40, 47296), (64, 29560), (80, 23648), (128, 14780), (160, 11824), (256, 7390), (320, 5912), (512, 3695), (640, 2956), (739, 2560), (1280, 1478)]