20264960

素因数分解:

$2^{11}\times 5^1\times {\mathrm{1979}}^1$

素因数の和:2006

約数の個数: 48

約数和(自身を含む): 48648600

約数和(自身を除く): 28383640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 1979, 2048, 2560, 3958, 5120, 7916, 9895, 10240, 15832, 19790, 31664, 39580, 63328, 79160, 126656, 158320, 253312, 316640, 506624, 633280, 1013248, 1266560, 2026496, 2533120, 4052992, 5066240, 10132480, 20264960]

約数ペア:

[(1, 20264960), (2, 10132480), (4, 5066240), (5, 4052992), (8, 2533120), (10, 2026496), (16, 1266560), (20, 1013248), (32, 633280), (40, 506624), (64, 316640), (80, 253312), (128, 158320), (160, 126656), (256, 79160), (320, 63328), (512, 39580), (640, 31664), (1024, 19790), (1280, 15832), (1979, 10240), (2048, 9895), (2560, 7916), (3958, 5120)]