20744675

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{367}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 32855040

約数和(自身を除く): 12110365

約数列:

[1, 5, 7, 17, 19, 25, 35, 85, 95, 119, 133, 175, 323, 367, 425, 475, 595, 665, 1615, 1835, 2261, 2569, 2975, 3325, 6239, 6973, 8075, 9175, 11305, 12845, 31195, 34865, 43673, 48811, 56525, 64225, 118541, 155975, 174325, 218365, 244055, 592705, 829787, 1091825, 1220275, 2963525, 4148935, 20744675]

約数ペア:

[(1, 20744675), (5, 4148935), (7, 2963525), (17, 1220275), (19, 1091825), (25, 829787), (35, 592705), (85, 244055), (95, 218365), (119, 174325), (133, 155975), (175, 118541), (323, 64225), (367, 56525), (425, 48811), (475, 43673), (595, 34865), (665, 31195), (1615, 12845), (1835, 11305), (2261, 9175), (2569, 8075), (2975, 6973), (3325, 6239)]