20954656

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{401}}^1$

素因数の和:505

約数の個数: 48

約数和(自身を含む): 43763328

約数和(自身を除く): 22808672

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 71, 92, 142, 184, 284, 368, 401, 568, 736, 802, 1136, 1604, 1633, 2272, 3208, 3266, 6416, 6532, 9223, 12832, 13064, 18446, 26128, 28471, 36892, 52256, 56942, 73784, 113884, 147568, 227768, 295136, 455536, 654833, 911072, 1309666, 2619332, 5238664, 10477328, 20954656]

約数ペア:

[(1, 20954656), (2, 10477328), (4, 5238664), (8, 2619332), (16, 1309666), (23, 911072), (32, 654833), (46, 455536), (71, 295136), (92, 227768), (142, 147568), (184, 113884), (284, 73784), (368, 56942), (401, 52256), (568, 36892), (736, 28471), (802, 26128), (1136, 18446), (1604, 13064), (1633, 12832), (2272, 9223), (3208, 6532), (3266, 6416)]