21404502

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{257}}^1\times {\mathrm{661}}^1$

素因数の和:933

約数の個数: 48

約数和(自身を含む): 53288352

約数和(自身を除く): 31883850

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 257, 514, 661, 771, 1322, 1542, 1799, 1983, 2313, 3598, 3966, 4626, 4627, 5397, 5949, 9254, 10794, 11898, 13881, 16191, 27762, 32382, 41643, 83286, 169877, 339754, 509631, 1019262, 1189139, 1528893, 2378278, 3057786, 3567417, 7134834, 10702251, 21404502]

約数ペア:

[(1, 21404502), (2, 10702251), (3, 7134834), (6, 3567417), (7, 3057786), (9, 2378278), (14, 1528893), (18, 1189139), (21, 1019262), (42, 509631), (63, 339754), (126, 169877), (257, 83286), (514, 41643), (661, 32382), (771, 27762), (1322, 16191), (1542, 13881), (1799, 11898), (1983, 10794), (2313, 9254), (3598, 5949), (3966, 5397), (4626, 4627)]