20817650

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{293}}^1$

素因数の和:348

約数の個数: 72

約数和(自身を含む): 46754820

約数和(自身を除く): 25937170

約数列:

[1, 2, 5, 7, 10, 14, 25, 29, 35, 49, 50, 58, 70, 98, 145, 175, 203, 245, 290, 293, 350, 406, 490, 586, 725, 1015, 1225, 1421, 1450, 1465, 2030, 2051, 2450, 2842, 2930, 4102, 5075, 7105, 7325, 8497, 10150, 10255, 14210, 14357, 14650, 16994, 20510, 28714, 35525, 42485, 51275, 59479, 71050, 71785, 84970, 102550, 118958, 143570, 212425, 297395, 358925, 416353, 424850, 594790, 717850, 832706, 1486975, 2081765, 2973950, 4163530, 10408825, 20817650]

約数ペア:

[(1, 20817650), (2, 10408825), (5, 4163530), (7, 2973950), (10, 2081765), (14, 1486975), (25, 832706), (29, 717850), (35, 594790), (49, 424850), (50, 416353), (58, 358925), (70, 297395), (98, 212425), (145, 143570), (175, 118958), (203, 102550), (245, 84970), (290, 71785), (293, 71050), (350, 59479), (406, 51275), (490, 42485), (586, 35525), (725, 28714), (1015, 20510), (1225, 16994), (1421, 14650), (1450, 14357), (1465, 14210), (2030, 10255), (2051, 10150), (2450, 8497), (2842, 7325), (2930, 7105), (4102, 5075)]