21282352

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{311}}^1$

素因数の和:386

約数の個数: 80

約数和(自身を含む): 51996672

約数和(自身を除く): 30714320

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 47, 52, 56, 91, 94, 104, 112, 182, 188, 208, 311, 329, 364, 376, 611, 622, 658, 728, 752, 1222, 1244, 1316, 1456, 2177, 2444, 2488, 2632, 4043, 4277, 4354, 4888, 4976, 5264, 8086, 8554, 8708, 9776, 14617, 16172, 17108, 17416, 28301, 29234, 32344, 34216, 34832, 56602, 58468, 64688, 68432, 102319, 113204, 116936, 190021, 204638, 226408, 233872, 380042, 409276, 452816, 760084, 818552, 1330147, 1520168, 1637104, 2660294, 3040336, 5320588, 10641176, 21282352]

約数ペア:

[(1, 21282352), (2, 10641176), (4, 5320588), (7, 3040336), (8, 2660294), (13, 1637104), (14, 1520168), (16, 1330147), (26, 818552), (28, 760084), (47, 452816), (52, 409276), (56, 380042), (91, 233872), (94, 226408), (104, 204638), (112, 190021), (182, 116936), (188, 113204), (208, 102319), (311, 68432), (329, 64688), (364, 58468), (376, 56602), (611, 34832), (622, 34216), (658, 32344), (728, 29234), (752, 28301), (1222, 17416), (1244, 17108), (1316, 16172), (1456, 14617), (2177, 9776), (2444, 8708), (2488, 8554), (2632, 8086), (4043, 5264), (4277, 4976), (4354, 4888)]