388328668

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{20129}}^1$

素因数の和:20206

約数の個数: 48

約数和(自身を含む): 852223680

約数和(自身を除く): 463895012

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 53, 91, 106, 182, 212, 364, 371, 689, 742, 1378, 1484, 2756, 4823, 9646, 19292, 20129, 40258, 80516, 140903, 261677, 281806, 523354, 563612, 1046708, 1066837, 1831739, 2133674, 3663478, 4267348, 7326956, 7467859, 13868881, 14935718, 27737762, 29871436, 55475524, 97082167, 194164334, 388328668]

約数ペア:

[(1, 388328668), (2, 194164334), (4, 97082167), (7, 55475524), (13, 29871436), (14, 27737762), (26, 14935718), (28, 13868881), (52, 7467859), (53, 7326956), (91, 4267348), (106, 3663478), (182, 2133674), (212, 1831739), (364, 1066837), (371, 1046708), (689, 563612), (742, 523354), (1378, 281806), (1484, 261677), (2756, 140903), (4823, 80516), (9646, 40258), (19292, 20129)]