20072008

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:298

約数の個数: 64

約数和(自身を含む): 43960320

約数和(自身を除く): 23888312

約数列:

[1, 2, 4, 8, 11, 22, 23, 44, 46, 47, 88, 92, 94, 184, 188, 211, 253, 376, 422, 506, 517, 844, 1012, 1034, 1081, 1688, 2024, 2068, 2162, 2321, 4136, 4324, 4642, 4853, 8648, 9284, 9706, 9917, 11891, 18568, 19412, 19834, 23782, 38824, 39668, 47564, 53383, 79336, 95128, 106766, 109087, 213532, 218174, 228091, 427064, 436348, 456182, 872696, 912364, 1824728, 2509001, 5018002, 10036004, 20072008]

約数ペア:

[(1, 20072008), (2, 10036004), (4, 5018002), (8, 2509001), (11, 1824728), (22, 912364), (23, 872696), (44, 456182), (46, 436348), (47, 427064), (88, 228091), (92, 218174), (94, 213532), (184, 109087), (188, 106766), (211, 95128), (253, 79336), (376, 53383), (422, 47564), (506, 39668), (517, 38824), (844, 23782), (1012, 19834), (1034, 19412), (1081, 18568), (1688, 11891), (2024, 9917), (2068, 9706), (2162, 9284), (2321, 8648), (4136, 4853), (4324, 4642)]