991525808

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{680993}}^1$

素因数の和:681021

約数の個数: 40

約数和(自身を含む): 2364411168

約数和(自身を除く): 1372885360

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 680993, 1361986, 2723972, 4766951, 5447944, 8852909, 9533902, 10895888, 17705818, 19067804, 35411636, 38135608, 61970363, 70823272, 76271216, 123940726, 141646544, 247881452, 495762904, 991525808]

約数ペア:

[(1, 991525808), (2, 495762904), (4, 247881452), (7, 141646544), (8, 123940726), (13, 76271216), (14, 70823272), (16, 61970363), (26, 38135608), (28, 35411636), (52, 19067804), (56, 17705818), (91, 10895888), (104, 9533902), (112, 8852909), (182, 5447944), (208, 4766951), (364, 2723972), (728, 1361986), (1456, 680993)]