19947392

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 42962400

約数和(自身を除く): 23015008

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 89, 103, 128, 136, 178, 206, 272, 356, 412, 544, 712, 824, 1088, 1424, 1513, 1648, 1751, 2176, 2848, 3026, 3296, 3502, 5696, 6052, 6592, 7004, 9167, 11392, 12104, 13184, 14008, 18334, 24208, 28016, 36668, 48416, 56032, 73336, 96832, 112064, 146672, 155839, 193664, 224128, 293344, 311678, 586688, 623356, 1173376, 1246712, 2493424, 4986848, 9973696, 19947392]

約数ペア:

[(1, 19947392), (2, 9973696), (4, 4986848), (8, 2493424), (16, 1246712), (17, 1173376), (32, 623356), (34, 586688), (64, 311678), (68, 293344), (89, 224128), (103, 193664), (128, 155839), (136, 146672), (178, 112064), (206, 96832), (272, 73336), (356, 56032), (412, 48416), (544, 36668), (712, 28016), (824, 24208), (1088, 18334), (1424, 14008), (1513, 13184), (1648, 12104), (1751, 11392), (2176, 9167), (2848, 7004), (3026, 6592), (3296, 6052), (3502, 5696)]