20946328

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:212

約数の個数: 64

約数和(自身を含む): 44755200

約数和(自身を除く): 23808872

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 73, 89, 104, 124, 146, 178, 248, 292, 356, 403, 584, 712, 806, 949, 1157, 1612, 1898, 2263, 2314, 2759, 3224, 3796, 4526, 4628, 5518, 6497, 7592, 9052, 9256, 11036, 12994, 18104, 22072, 25988, 29419, 35867, 51976, 58838, 71734, 84461, 117676, 143468, 168922, 201407, 235352, 286936, 337844, 402814, 675688, 805628, 1611256, 2618291, 5236582, 10473164, 20946328]

約数ペア:

[(1, 20946328), (2, 10473164), (4, 5236582), (8, 2618291), (13, 1611256), (26, 805628), (31, 675688), (52, 402814), (62, 337844), (73, 286936), (89, 235352), (104, 201407), (124, 168922), (146, 143468), (178, 117676), (248, 84461), (292, 71734), (356, 58838), (403, 51976), (584, 35867), (712, 29419), (806, 25988), (949, 22072), (1157, 18104), (1612, 12994), (1898, 11036), (2263, 9256), (2314, 9052), (2759, 7592), (3224, 6497), (3796, 5518), (4526, 4628)]