21622040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{313}}^1$

素因数の和:492

約数の個数: 64

約数和(自身を含む): 53580960

約数和(自身を除く): 31958920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 157, 220, 313, 314, 440, 626, 628, 785, 1252, 1256, 1565, 1570, 1727, 2504, 3130, 3140, 3443, 3454, 6260, 6280, 6886, 6908, 8635, 12520, 13772, 13816, 17215, 17270, 27544, 34430, 34540, 49141, 68860, 69080, 98282, 137720, 196564, 245705, 393128, 491410, 540551, 982820, 1081102, 1965640, 2162204, 2702755, 4324408, 5405510, 10811020, 21622040]

約数ペア:

[(1, 21622040), (2, 10811020), (4, 5405510), (5, 4324408), (8, 2702755), (10, 2162204), (11, 1965640), (20, 1081102), (22, 982820), (40, 540551), (44, 491410), (55, 393128), (88, 245705), (110, 196564), (157, 137720), (220, 98282), (313, 69080), (314, 68860), (440, 49141), (626, 34540), (628, 34430), (785, 27544), (1252, 17270), (1256, 17215), (1565, 13816), (1570, 13772), (1727, 12520), (2504, 8635), (3130, 6908), (3140, 6886), (3443, 6280), (3454, 6260)]