12780821950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{190901}}^1$

素因数の和:191029

約数の個数: 48

約数和(自身を含む): 25849658016

約数和(自身を除く): 13068836066

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 103, 130, 206, 325, 515, 650, 1030, 1339, 2575, 2678, 5150, 6695, 13390, 33475, 66950, 190901, 381802, 954505, 1909010, 2481713, 4772525, 4963426, 9545050, 12408565, 19662803, 24817130, 39325606, 62042825, 98314015, 124085650, 196628030, 255616439, 491570075, 511232878, 983140150, 1278082195, 2556164390, 6390410975, 12780821950]

約数ペア:

[(1, 12780821950), (2, 6390410975), (5, 2556164390), (10, 1278082195), (13, 983140150), (25, 511232878), (26, 491570075), (50, 255616439), (65, 196628030), (103, 124085650), (130, 98314015), (206, 62042825), (325, 39325606), (515, 24817130), (650, 19662803), (1030, 12408565), (1339, 9545050), (2575, 4963426), (2678, 4772525), (5150, 2481713), (6695, 1909010), (13390, 954505), (33475, 381802), (66950, 190901)]