18984368

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{853}}^1$

素因数の和:981

約数の個数: 40

約数和(自身を含む): 40028688

約数和(自身を除く): 21044320

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 107, 208, 214, 428, 853, 856, 1391, 1706, 1712, 2782, 3412, 5564, 6824, 11089, 11128, 13648, 22178, 22256, 44356, 88712, 91271, 177424, 182542, 365084, 730168, 1186523, 1460336, 2373046, 4746092, 9492184, 18984368]

約数ペア:

[(1, 18984368), (2, 9492184), (4, 4746092), (8, 2373046), (13, 1460336), (16, 1186523), (26, 730168), (52, 365084), (104, 182542), (107, 177424), (208, 91271), (214, 88712), (428, 44356), (853, 22256), (856, 22178), (1391, 13648), (1706, 11128), (1712, 11089), (2782, 6824), (3412, 5564)]