21492952016

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{199}}^1\times {\mathrm{227}}^2$

素因数の和:792

約数の個数: 60

約数和(自身を含む): 42357928800

約数和(自身を除く): 20864976784

約数列:

[1, 2, 4, 8, 16, 131, 199, 227, 262, 398, 454, 524, 796, 908, 1048, 1592, 1816, 2096, 3184, 3632, 26069, 29737, 45173, 51529, 52138, 59474, 90346, 103058, 104276, 118948, 180692, 206116, 208552, 237896, 361384, 412232, 417104, 475792, 722768, 824464, 5917663, 6750299, 10254271, 11835326, 13500598, 20508542, 23670652, 27001196, 41017084, 47341304, 54002392, 82034168, 94682608, 108004784, 164068336, 1343309501, 2686619002, 5373238004, 10746476008, 21492952016]

約数ペア:

[(1, 21492952016), (2, 10746476008), (4, 5373238004), (8, 2686619002), (16, 1343309501), (131, 164068336), (199, 108004784), (227, 94682608), (262, 82034168), (398, 54002392), (454, 47341304), (524, 41017084), (796, 27001196), (908, 23670652), (1048, 20508542), (1592, 13500598), (1816, 11835326), (2096, 10254271), (3184, 6750299), (3632, 5917663), (26069, 824464), (29737, 722768), (45173, 475792), (51529, 417104), (52138, 412232), (59474, 361384), (90346, 237896), (103058, 208552), (104276, 206116), (118948, 180692)]