20145011985

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1253969}}^1$

素因数の和:1254007

約数の個数: 64

約数和(自身を含む): 43337203200

約数和(自身を除く): 23192191215

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 27, 35, 45, 51, 63, 85, 105, 119, 135, 153, 189, 255, 315, 357, 459, 595, 765, 945, 1071, 1785, 2295, 3213, 5355, 16065, 1253969, 3761907, 6269845, 8777783, 11285721, 18809535, 21317473, 26333349, 33857163, 43888915, 56428605, 63952419, 79000047, 106587365, 131666745, 149222311, 169285815, 191857257, 237000141, 319762095, 395000235, 447666933, 575571771, 746111555, 959286285, 1185000705, 1343000799, 2238334665, 2877858855, 4029002397, 6715003995, 20145011985]

約数ペア:

[(1, 20145011985), (3, 6715003995), (5, 4029002397), (7, 2877858855), (9, 2238334665), (15, 1343000799), (17, 1185000705), (21, 959286285), (27, 746111555), (35, 575571771), (45, 447666933), (51, 395000235), (63, 319762095), (85, 237000141), (105, 191857257), (119, 169285815), (135, 149222311), (153, 131666745), (189, 106587365), (255, 79000047), (315, 63952419), (357, 56428605), (459, 43888915), (595, 33857163), (765, 26333349), (945, 21317473), (1071, 18809535), (1785, 11285721), (2295, 8777783), (3213, 6269845), (5355, 3761907), (16065, 1253969)]