20237440

素因数分解:

$2^7\times 5^1\times {\mathrm{103}}^1\times {\mathrm{307}}^1$

素因数の和:429

約数の個数: 64

約数和(自身を含む): 49008960

約数和(自身を除く): 28771520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 103, 128, 160, 206, 307, 320, 412, 515, 614, 640, 824, 1030, 1228, 1535, 1648, 2060, 2456, 3070, 3296, 4120, 4912, 6140, 6592, 8240, 9824, 12280, 13184, 16480, 19648, 24560, 31621, 32960, 39296, 49120, 63242, 65920, 98240, 126484, 158105, 196480, 252968, 316210, 505936, 632420, 1011872, 1264840, 2023744, 2529680, 4047488, 5059360, 10118720, 20237440]

約数ペア:

[(1, 20237440), (2, 10118720), (4, 5059360), (5, 4047488), (8, 2529680), (10, 2023744), (16, 1264840), (20, 1011872), (32, 632420), (40, 505936), (64, 316210), (80, 252968), (103, 196480), (128, 158105), (160, 126484), (206, 98240), (307, 65920), (320, 63242), (412, 49120), (515, 39296), (614, 32960), (640, 31621), (824, 24560), (1030, 19648), (1228, 16480), (1535, 13184), (1648, 12280), (2060, 9824), (2456, 8240), (3070, 6592), (3296, 6140), (4120, 4912)]