19859944

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:322

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 23685656

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 47, 52, 68, 94, 104, 136, 188, 221, 239, 376, 442, 478, 611, 799, 884, 956, 1222, 1598, 1768, 1912, 2444, 3107, 3196, 4063, 4888, 6214, 6392, 8126, 10387, 11233, 12428, 16252, 20774, 22466, 24856, 32504, 41548, 44932, 52819, 83096, 89864, 105638, 146029, 190961, 211276, 292058, 381922, 422552, 584116, 763844, 1168232, 1527688, 2482493, 4964986, 9929972, 19859944]

約数ペア:

[(1, 19859944), (2, 9929972), (4, 4964986), (8, 2482493), (13, 1527688), (17, 1168232), (26, 763844), (34, 584116), (47, 422552), (52, 381922), (68, 292058), (94, 211276), (104, 190961), (136, 146029), (188, 105638), (221, 89864), (239, 83096), (376, 52819), (442, 44932), (478, 41548), (611, 32504), (799, 24856), (884, 22466), (956, 20774), (1222, 16252), (1598, 12428), (1768, 11233), (1912, 10387), (2444, 8126), (3107, 6392), (3196, 6214), (4063, 4888)]