20528384

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:175

約数の個数: 72

約数和(自身を含む): 44702280

約数和(自身を除く): 24173896

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 53, 64, 68, 89, 106, 128, 136, 178, 212, 256, 272, 356, 424, 544, 712, 848, 901, 1088, 1424, 1513, 1696, 1802, 2176, 2848, 3026, 3392, 3604, 4352, 4717, 5696, 6052, 6784, 7208, 9434, 11392, 12104, 13568, 14416, 18868, 22784, 24208, 28832, 37736, 48416, 57664, 75472, 80189, 96832, 115328, 150944, 160378, 193664, 230656, 301888, 320756, 387328, 603776, 641512, 1207552, 1283024, 2566048, 5132096, 10264192, 20528384]

約数ペア:

[(1, 20528384), (2, 10264192), (4, 5132096), (8, 2566048), (16, 1283024), (17, 1207552), (32, 641512), (34, 603776), (53, 387328), (64, 320756), (68, 301888), (89, 230656), (106, 193664), (128, 160378), (136, 150944), (178, 115328), (212, 96832), (256, 80189), (272, 75472), (356, 57664), (424, 48416), (544, 37736), (712, 28832), (848, 24208), (901, 22784), (1088, 18868), (1424, 14416), (1513, 13568), (1696, 12104), (1802, 11392), (2176, 9434), (2848, 7208), (3026, 6784), (3392, 6052), (3604, 5696), (4352, 4717)]