21000657645

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{3517}}^1\times {\mathrm{4021}}^1$

素因数の和:7563

約数の個数: 64

約数和(自身を含む): 40750260480

約数和(自身を除く): 19749602835

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 135, 165, 297, 495, 1485, 3517, 4021, 10551, 12063, 17585, 20105, 31653, 36189, 38687, 44231, 52755, 60315, 94959, 108567, 116061, 132693, 158265, 180945, 193435, 221155, 348183, 398079, 474795, 542835, 580305, 663465, 1044549, 1194237, 1740915, 1990395, 5222745, 5971185, 14141857, 42425571, 70709285, 127276713, 155560427, 212127855, 381830139, 466681281, 636383565, 777802135, 1400043843, 1909150695, 2333406405, 4200131529, 7000219215, 21000657645]

約数ペア:

[(1, 21000657645), (3, 7000219215), (5, 4200131529), (9, 2333406405), (11, 1909150695), (15, 1400043843), (27, 777802135), (33, 636383565), (45, 466681281), (55, 381830139), (99, 212127855), (135, 155560427), (165, 127276713), (297, 70709285), (495, 42425571), (1485, 14141857), (3517, 5971185), (4021, 5222745), (10551, 1990395), (12063, 1740915), (17585, 1194237), (20105, 1044549), (31653, 663465), (36189, 580305), (38687, 542835), (44231, 474795), (52755, 398079), (60315, 348183), (94959, 221155), (108567, 193435), (116061, 180945), (132693, 158265)]