20445568

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1117}}^1$

素因数の和:1155

約数の個数: 64

約数和(自身を含む): 47895120

約数和(自身を除く): 27449552

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 64, 88, 104, 128, 143, 176, 208, 286, 352, 416, 572, 704, 832, 1117, 1144, 1408, 1664, 2234, 2288, 4468, 4576, 8936, 9152, 12287, 14521, 17872, 18304, 24574, 29042, 35744, 49148, 58084, 71488, 98296, 116168, 142976, 159731, 196592, 232336, 319462, 393184, 464672, 638924, 786368, 929344, 1277848, 1572736, 1858688, 2555696, 5111392, 10222784, 20445568]

約数ペア:

[(1, 20445568), (2, 10222784), (4, 5111392), (8, 2555696), (11, 1858688), (13, 1572736), (16, 1277848), (22, 929344), (26, 786368), (32, 638924), (44, 464672), (52, 393184), (64, 319462), (88, 232336), (104, 196592), (128, 159731), (143, 142976), (176, 116168), (208, 98296), (286, 71488), (352, 58084), (416, 49148), (572, 35744), (704, 29042), (832, 24574), (1117, 18304), (1144, 17872), (1408, 14521), (1664, 12287), (2234, 9152), (2288, 8936), (4468, 4576)]