400020712

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{78497}}^1$

素因数の和:78530

約数の個数: 48

約数和(自身を含む): 939621060

約数和(自身を除く): 539600348

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 182, 196, 364, 392, 637, 728, 1274, 2548, 5096, 78497, 156994, 313988, 549479, 627976, 1020461, 1098958, 2040922, 2197916, 3846353, 4081844, 4395832, 7143227, 7692706, 8163688, 14286454, 15385412, 28572908, 30770824, 50002589, 57145816, 100005178, 200010356, 400020712]

約数ペア:

[(1, 400020712), (2, 200010356), (4, 100005178), (7, 57145816), (8, 50002589), (13, 30770824), (14, 28572908), (26, 15385412), (28, 14286454), (49, 8163688), (52, 7692706), (56, 7143227), (91, 4395832), (98, 4081844), (104, 3846353), (182, 2197916), (196, 2040922), (364, 1098958), (392, 1020461), (637, 627976), (728, 549479), (1274, 313988), (2548, 156994), (5096, 78497)]