19981278

素因数分解:

$2^1\times 3^2\times {\mathrm{211}}^1\times {\mathrm{5261}}^1$

素因数の和:5480

約数の個数: 24

約数和(自身を含む): 43506216

約数和(自身を除く): 23524938

約数列:

[1, 2, 3, 6, 9, 18, 211, 422, 633, 1266, 1899, 3798, 5261, 10522, 15783, 31566, 47349, 94698, 1110071, 2220142, 3330213, 6660426, 9990639, 19981278]

約数ペア:

[(1, 19981278), (2, 9990639), (3, 6660426), (6, 3330213), (9, 2220142), (18, 1110071), (211, 94698), (422, 47349), (633, 31566), (1266, 15783), (1899, 10522), (3798, 5261)]