28978720

素因数分解:

$2^5\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1303}}^1$

素因数の和:1457

約数の個数: 48

約数和(自身を含む): 69007680

約数和(自身を除く): 40028960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 139, 160, 278, 556, 695, 1112, 1303, 1390, 2224, 2606, 2780, 4448, 5212, 5560, 6515, 10424, 11120, 13030, 20848, 22240, 26060, 41696, 52120, 104240, 181117, 208480, 362234, 724468, 905585, 1448936, 1811170, 2897872, 3622340, 5795744, 7244680, 14489360, 28978720]

約数ペア:

[(1, 28978720), (2, 14489360), (4, 7244680), (5, 5795744), (8, 3622340), (10, 2897872), (16, 1811170), (20, 1448936), (32, 905585), (40, 724468), (80, 362234), (139, 208480), (160, 181117), (278, 104240), (556, 52120), (695, 41696), (1112, 26060), (1303, 22240), (1390, 20848), (2224, 13030), (2606, 11120), (2780, 10424), (4448, 6515), (5212, 5560)]