19657712

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{72271}}^1$

素因数の和:72296

約数の個数: 20

約数和(自身を含む): 40327776

約数和(自身を除く): 20670064

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 72271, 144542, 289084, 578168, 1156336, 1228607, 2457214, 4914428, 9828856, 19657712]

約数ペア:

[(1, 19657712), (2, 9828856), (4, 4914428), (8, 2457214), (16, 1228607), (17, 1156336), (34, 578168), (68, 289084), (136, 144542), (272, 72271)]