21137248

素因数分解:

$2^5\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:188

約数の個数: 72

約数和(自身を含む): 47056464

約数和(自身を除く): 25919216

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 53, 88, 103, 106, 121, 176, 206, 212, 242, 352, 412, 424, 484, 583, 824, 848, 968, 1133, 1166, 1648, 1696, 1936, 2266, 2332, 3296, 3872, 4532, 4664, 5459, 6413, 9064, 9328, 10918, 12463, 12826, 18128, 18656, 21836, 24926, 25652, 36256, 43672, 49852, 51304, 60049, 87344, 99704, 102608, 120098, 174688, 199408, 205216, 240196, 398816, 480392, 660539, 960784, 1321078, 1921568, 2642156, 5284312, 10568624, 21137248]

約数ペア:

[(1, 21137248), (2, 10568624), (4, 5284312), (8, 2642156), (11, 1921568), (16, 1321078), (22, 960784), (32, 660539), (44, 480392), (53, 398816), (88, 240196), (103, 205216), (106, 199408), (121, 174688), (176, 120098), (206, 102608), (212, 99704), (242, 87344), (352, 60049), (412, 51304), (424, 49852), (484, 43672), (583, 36256), (824, 25652), (848, 24926), (968, 21836), (1133, 18656), (1166, 18128), (1648, 12826), (1696, 12463), (1936, 10918), (2266, 9328), (2332, 9064), (3296, 6413), (3872, 5459), (4532, 4664)]