20804905280

素因数分解:

$2^6\times 5^1\times {\mathrm{1229}}^1\times {\mathrm{52901}}^1$

素因数の和:54147

約数の個数: 56

約数和(自身を含む): 49582928520

約数和(自身を除く): 28778023240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 1229, 2458, 4916, 6145, 9832, 12290, 19664, 24580, 39328, 49160, 52901, 78656, 98320, 105802, 196640, 211604, 264505, 393280, 423208, 529010, 846416, 1058020, 1692832, 2116040, 3385664, 4232080, 8464160, 16928320, 65015329, 130030658, 260061316, 325076645, 520122632, 650153290, 1040245264, 1300306580, 2080490528, 2600613160, 4160981056, 5201226320, 10402452640, 20804905280]

約数ペア:

[(1, 20804905280), (2, 10402452640), (4, 5201226320), (5, 4160981056), (8, 2600613160), (10, 2080490528), (16, 1300306580), (20, 1040245264), (32, 650153290), (40, 520122632), (64, 325076645), (80, 260061316), (160, 130030658), (320, 65015329), (1229, 16928320), (2458, 8464160), (4916, 4232080), (6145, 3385664), (9832, 2116040), (12290, 1692832), (19664, 1058020), (24580, 846416), (39328, 529010), (49160, 423208), (52901, 393280), (78656, 264505), (98320, 211604), (105802, 196640)]