20651820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49171}}^1$

素因数の和:49190

約数の個数: 48

約数和(自身を含む): 66087168

約数和(自身を除く): 45435348

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49171, 98342, 147513, 196684, 245855, 295026, 344197, 491710, 590052, 688394, 737565, 983420, 1032591, 1376788, 1475130, 1720985, 2065182, 2950260, 3441970, 4130364, 5162955, 6883940, 10325910, 20651820]

約数ペア:

[(1, 20651820), (2, 10325910), (3, 6883940), (4, 5162955), (5, 4130364), (6, 3441970), (7, 2950260), (10, 2065182), (12, 1720985), (14, 1475130), (15, 1376788), (20, 1032591), (21, 983420), (28, 737565), (30, 688394), (35, 590052), (42, 491710), (60, 344197), (70, 295026), (84, 245855), (105, 196684), (140, 147513), (210, 98342), (420, 49171)]