81932240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78781}}^1$

素因数の和:78807

約数の個数: 40

約数和(自身を含む): 205148328

約数和(自身を除く): 123216088

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 78781, 157562, 315124, 393905, 630248, 787810, 1024153, 1260496, 1575620, 2048306, 3151240, 4096612, 5120765, 6302480, 8193224, 10241530, 16386448, 20483060, 40966120, 81932240]

約数ペア:

[(1, 81932240), (2, 40966120), (4, 20483060), (5, 16386448), (8, 10241530), (10, 8193224), (13, 6302480), (16, 5120765), (20, 4096612), (26, 3151240), (40, 2048306), (52, 1575620), (65, 1260496), (80, 1024153), (104, 787810), (130, 630248), (208, 393905), (260, 315124), (520, 157562), (1040, 78781)]