305920

素因数分解:

$2^8\times 5^1\times {\mathrm{239}}^1$

素因数の和:260

約数の個数: 36

約数和(自身を含む): 735840

約数和(自身を除く): 429920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 239, 256, 320, 478, 640, 956, 1195, 1280, 1912, 2390, 3824, 4780, 7648, 9560, 15296, 19120, 30592, 38240, 61184, 76480, 152960, 305920]

約数ペア:

[(1, 305920), (2, 152960), (4, 76480), (5, 61184), (8, 38240), (10, 30592), (16, 19120), (20, 15296), (32, 9560), (40, 7648), (64, 4780), (80, 3824), (128, 2390), (160, 1912), (239, 1280), (256, 1195), (320, 956), (478, 640)]