20311040

素因数分解:

$2^{10}\times 5^1\times {\mathrm{3967}}^1$

素因数の和:3992

約数の個数: 44

約数和(自身を含む): 48734976

約数和(自身を除く): 28423936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 3967, 5120, 7934, 15868, 19835, 31736, 39670, 63472, 79340, 126944, 158680, 253888, 317360, 507776, 634720, 1015552, 1269440, 2031104, 2538880, 4062208, 5077760, 10155520, 20311040]

約数ペア:

[(1, 20311040), (2, 10155520), (4, 5077760), (5, 4062208), (8, 2538880), (10, 2031104), (16, 1269440), (20, 1015552), (32, 634720), (40, 507776), (64, 317360), (80, 253888), (128, 158680), (160, 126944), (256, 79340), (320, 63472), (512, 39670), (640, 31736), (1024, 19835), (1280, 15868), (2560, 7934), (3967, 5120)]