21028854548

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{12281}}^1$

素因数の和:12477

約数の個数: 72

約数和(自身を含む): 42479753400

約数和(自身を除く): 21450898852

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 149, 169, 221, 298, 338, 442, 596, 676, 884, 1937, 2533, 2873, 3874, 5066, 5746, 7748, 10132, 11492, 12281, 24562, 25181, 32929, 49124, 50362, 65858, 100724, 131716, 159653, 208777, 319306, 417554, 428077, 638612, 835108, 856154, 1712308, 1829869, 2075489, 2714101, 3659738, 4150978, 5428202, 7319476, 8301956, 10856404, 23788297, 31107773, 35283313, 47576594, 62215546, 70566626, 95153188, 124431092, 141133252, 309247861, 404401049, 618495722, 808802098, 1236991444, 1617604196, 5257213637, 10514427274, 21028854548]

約数ペア:

[(1, 21028854548), (2, 10514427274), (4, 5257213637), (13, 1617604196), (17, 1236991444), (26, 808802098), (34, 618495722), (52, 404401049), (68, 309247861), (149, 141133252), (169, 124431092), (221, 95153188), (298, 70566626), (338, 62215546), (442, 47576594), (596, 35283313), (676, 31107773), (884, 23788297), (1937, 10856404), (2533, 8301956), (2873, 7319476), (3874, 5428202), (5066, 4150978), (5746, 3659738), (7748, 2714101), (10132, 2075489), (11492, 1829869), (12281, 1712308), (24562, 856154), (25181, 835108), (32929, 638612), (49124, 428077), (50362, 417554), (65858, 319306), (100724, 208777), (131716, 159653)]