20144578209

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{67807}}^1$

素因数の和:67914

約数の個数: 48

約数和(自身を含む): 32651993088

約数和(自身を除く): 12507414879

約数列:

[1, 3, 7, 21, 43, 47, 49, 129, 141, 147, 301, 329, 903, 987, 2021, 2107, 2303, 6063, 6321, 6909, 14147, 42441, 67807, 99029, 203421, 297087, 474649, 1423947, 2915701, 3186929, 3322543, 8747103, 9560787, 9967629, 20409907, 22308503, 61229721, 66925509, 137037947, 142869349, 156159521, 411113841, 428608047, 468478563, 959265629, 2877796887, 6714859403, 20144578209]

約数ペア:

[(1, 20144578209), (3, 6714859403), (7, 2877796887), (21, 959265629), (43, 468478563), (47, 428608047), (49, 411113841), (129, 156159521), (141, 142869349), (147, 137037947), (301, 66925509), (329, 61229721), (903, 22308503), (987, 20409907), (2021, 9967629), (2107, 9560787), (2303, 8747103), (6063, 3322543), (6321, 3186929), (6909, 2915701), (14147, 1423947), (42441, 474649), (67807, 297087), (99029, 203421)]