20790700

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{4243}}^1$

素因数の和:4271

約数の個数: 54

約数和(自身を含む): 52494036

約数和(自身を除く): 31703336

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4243, 4900, 8486, 16972, 21215, 29701, 42430, 59402, 84860, 106075, 118804, 148505, 207907, 212150, 297010, 415814, 424300, 594020, 742525, 831628, 1039535, 1485050, 2079070, 2970100, 4158140, 5197675, 10395350, 20790700]

約数ペア:

[(1, 20790700), (2, 10395350), (4, 5197675), (5, 4158140), (7, 2970100), (10, 2079070), (14, 1485050), (20, 1039535), (25, 831628), (28, 742525), (35, 594020), (49, 424300), (50, 415814), (70, 297010), (98, 212150), (100, 207907), (140, 148505), (175, 118804), (196, 106075), (245, 84860), (350, 59402), (490, 42430), (700, 29701), (980, 21215), (1225, 16972), (2450, 8486), (4243, 4900)]