15939664

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{389}}^1$

素因数の和:607

約数の個数: 40

約数和(自身を含む): 33513480

約数和(自身を除く): 17573816

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 197, 208, 389, 394, 778, 788, 1556, 1576, 2561, 3112, 3152, 5057, 5122, 6224, 10114, 10244, 20228, 20488, 40456, 40976, 76633, 80912, 153266, 306532, 613064, 996229, 1226128, 1992458, 3984916, 7969832, 15939664]

約数ペア:

[(1, 15939664), (2, 7969832), (4, 3984916), (8, 1992458), (13, 1226128), (16, 996229), (26, 613064), (52, 306532), (104, 153266), (197, 80912), (208, 76633), (389, 40976), (394, 40456), (778, 20488), (788, 20228), (1556, 10244), (1576, 10114), (2561, 6224), (3112, 5122), (3152, 5057)]