21754740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51797}}^1$

素因数の和:51816

約数の個数: 48

約数和(自身を含む): 69616512

約数和(自身を除く): 47861772

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, 51797, 103594, 155391, 207188, 258985, 310782, 362579, 517970, 621564, 725158, 776955, 1035940, 1087737, 1450316, 1553910, 1812895, 2175474, 3107820, 3625790, 4350948, 5438685, 7251580, 10877370, 21754740]

約数ペア:

[(1, 21754740), (2, 10877370), (3, 7251580), (4, 5438685), (5, 4350948), (6, 3625790), (7, 3107820), (10, 2175474), (12, 1812895), (14, 1553910), (15, 1450316), (20, 1087737), (21, 1035940), (28, 776955), (30, 725158), (35, 621564), (42, 517970), (60, 362579), (70, 310782), (84, 258985), (105, 207188), (140, 155391), (210, 103594), (420, 51797)]