20729100

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{9871}}^1$

素因数の和:9895

約数の個数: 72

約数和(自身を含む): 68551168

約数和(自身を除く): 47822068

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 9871, 19742, 29613, 39484, 49355, 59226, 69097, 98710, 118452, 138194, 148065, 197420, 207291, 246775, 276388, 296130, 345485, 414582, 493550, 592260, 690970, 740325, 829164, 987100, 1036455, 1381940, 1480650, 1727425, 2072910, 2961300, 3454850, 4145820, 5182275, 6909700, 10364550, 20729100]

約数ペア:

[(1, 20729100), (2, 10364550), (3, 6909700), (4, 5182275), (5, 4145820), (6, 3454850), (7, 2961300), (10, 2072910), (12, 1727425), (14, 1480650), (15, 1381940), (20, 1036455), (21, 987100), (25, 829164), (28, 740325), (30, 690970), (35, 592260), (42, 493550), (50, 414582), (60, 345485), (70, 296130), (75, 276388), (84, 246775), (100, 207291), (105, 197420), (140, 148065), (150, 138194), (175, 118452), (210, 98710), (300, 69097), (350, 59226), (420, 49355), (525, 39484), (700, 29613), (1050, 19742), (2100, 9871)]