20805770830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{647953}}^1$

素因数の和:648005

約数の個数: 48

約数和(自身を含む): 42687209520

約数和(自身を除く): 21881438690

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 169, 190, 247, 338, 494, 845, 1235, 1690, 2470, 3211, 6422, 16055, 32110, 647953, 1295906, 3239765, 6479530, 8423389, 12311107, 16846778, 24622214, 42116945, 61555535, 84233890, 109504057, 123111070, 160044391, 219008114, 320088782, 547520285, 800221955, 1095040570, 1600443910, 2080577083, 4161154166, 10402885415, 20805770830]

約数ペア:

[(1, 20805770830), (2, 10402885415), (5, 4161154166), (10, 2080577083), (13, 1600443910), (19, 1095040570), (26, 800221955), (38, 547520285), (65, 320088782), (95, 219008114), (130, 160044391), (169, 123111070), (190, 109504057), (247, 84233890), (338, 61555535), (494, 42116945), (845, 24622214), (1235, 16846778), (1690, 12311107), (2470, 8423389), (3211, 6479530), (6422, 3239765), (16055, 1295906), (32110, 647953)]