20948464

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{313}}^1$

素因数の和:457

約数の個数: 40

約数和(自身を含む): 42050880

約数和(自身を除く): 21102416

約数列:

[1, 2, 4, 8, 16, 47, 89, 94, 178, 188, 313, 356, 376, 626, 712, 752, 1252, 1424, 2504, 4183, 5008, 8366, 14711, 16732, 27857, 29422, 33464, 55714, 58844, 66928, 111428, 117688, 222856, 235376, 445712, 1309279, 2618558, 5237116, 10474232, 20948464]

約数ペア:

[(1, 20948464), (2, 10474232), (4, 5237116), (8, 2618558), (16, 1309279), (47, 445712), (89, 235376), (94, 222856), (178, 117688), (188, 111428), (313, 66928), (356, 58844), (376, 55714), (626, 33464), (712, 29422), (752, 27857), (1252, 16732), (1424, 14711), (2504, 8366), (4183, 5008)]