18663820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4597}}^1$

素因数の和:4642

約数の個数: 48

約数和(自身を含む): 46347840

約数和(自身を除く): 27684020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4597, 9194, 18388, 22985, 32179, 45970, 64358, 91940, 128716, 133313, 160895, 266626, 321790, 533252, 643580, 666565, 933191, 1333130, 1866382, 2666260, 3732764, 4665955, 9331910, 18663820]

約数ペア:

[(1, 18663820), (2, 9331910), (4, 4665955), (5, 3732764), (7, 2666260), (10, 1866382), (14, 1333130), (20, 933191), (28, 666565), (29, 643580), (35, 533252), (58, 321790), (70, 266626), (116, 160895), (140, 133313), (145, 128716), (203, 91940), (290, 64358), (406, 45970), (580, 32179), (812, 22985), (1015, 18388), (2030, 9194), (4060, 4597)]