17921428

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{233}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 37425024

約数和(自身を除く): 19503596

約数列:

[1, 2, 4, 7, 14, 28, 41, 67, 82, 134, 164, 233, 268, 287, 466, 469, 574, 932, 938, 1148, 1631, 1876, 2747, 3262, 5494, 6524, 9553, 10988, 15611, 19106, 19229, 31222, 38212, 38458, 62444, 66871, 76916, 109277, 133742, 218554, 267484, 437108, 640051, 1280102, 2560204, 4480357, 8960714, 17921428]

約数ペア:

[(1, 17921428), (2, 8960714), (4, 4480357), (7, 2560204), (14, 1280102), (28, 640051), (41, 437108), (67, 267484), (82, 218554), (134, 133742), (164, 109277), (233, 76916), (268, 66871), (287, 62444), (466, 38458), (469, 38212), (574, 31222), (932, 19229), (938, 19106), (1148, 15611), (1631, 10988), (1876, 9553), (2747, 6524), (3262, 5494)]