21019740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50047}}^1$

素因数の和:50066

約数の個数: 48

約数和(自身を含む): 67264512

約数和(自身を除く): 46244772

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, 50047, 100094, 150141, 200188, 250235, 300282, 350329, 500470, 600564, 700658, 750705, 1000940, 1050987, 1401316, 1501410, 1751645, 2101974, 3002820, 3503290, 4203948, 5254935, 7006580, 10509870, 21019740]

約数ペア:

[(1, 21019740), (2, 10509870), (3, 7006580), (4, 5254935), (5, 4203948), (6, 3503290), (7, 3002820), (10, 2101974), (12, 1751645), (14, 1501410), (15, 1401316), (20, 1050987), (21, 1000940), (28, 750705), (30, 700658), (35, 600564), (42, 500470), (60, 350329), (70, 300282), (84, 250235), (105, 200188), (140, 150141), (210, 100094), (420, 50047)]