21359940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50857}}^1$

素因数の和:50876

約数の個数: 48

約数和(自身を含む): 68353152

約数和(自身を除く): 46993212

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, 50857, 101714, 152571, 203428, 254285, 305142, 355999, 508570, 610284, 711998, 762855, 1017140, 1067997, 1423996, 1525710, 1779995, 2135994, 3051420, 3559990, 4271988, 5339985, 7119980, 10679970, 21359940]

約数ペア:

[(1, 21359940), (2, 10679970), (3, 7119980), (4, 5339985), (5, 4271988), (6, 3559990), (7, 3051420), (10, 2135994), (12, 1779995), (14, 1525710), (15, 1423996), (20, 1067997), (21, 1017140), (28, 762855), (30, 711998), (35, 610284), (42, 508570), (60, 355999), (70, 305142), (84, 254285), (105, 203428), (140, 152571), (210, 101714), (420, 50857)]