20945916

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{617}}^1$

素因数の和:691

約数の個数: 72

約数和(自身を含む): 56687904

約数和(自身を除く): 35741988

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 41, 46, 69, 82, 92, 123, 138, 164, 207, 246, 276, 369, 414, 492, 617, 738, 828, 943, 1234, 1476, 1851, 1886, 2468, 2829, 3702, 3772, 5553, 5658, 7404, 8487, 11106, 11316, 14191, 16974, 22212, 25297, 28382, 33948, 42573, 50594, 56764, 75891, 85146, 101188, 127719, 151782, 170292, 227673, 255438, 303564, 455346, 510876, 581831, 910692, 1163662, 1745493, 2327324, 3490986, 5236479, 6981972, 10472958, 20945916]

約数ペア:

[(1, 20945916), (2, 10472958), (3, 6981972), (4, 5236479), (6, 3490986), (9, 2327324), (12, 1745493), (18, 1163662), (23, 910692), (36, 581831), (41, 510876), (46, 455346), (69, 303564), (82, 255438), (92, 227673), (123, 170292), (138, 151782), (164, 127719), (207, 101188), (246, 85146), (276, 75891), (369, 56764), (414, 50594), (492, 42573), (617, 33948), (738, 28382), (828, 25297), (943, 22212), (1234, 16974), (1476, 14191), (1851, 11316), (1886, 11106), (2468, 8487), (2829, 7404), (3702, 5658), (3772, 5553)]