20565799880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{4957}}^1$

素因数の和:5143

約数の個数: 128

約数和(自身を含む): 50119430400

約数和(自身を除く): 29553630520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 53, 76, 95, 103, 106, 152, 190, 206, 212, 265, 380, 412, 424, 515, 530, 760, 824, 1007, 1030, 1060, 1957, 2014, 2060, 2120, 3914, 4028, 4120, 4957, 5035, 5459, 7828, 8056, 9785, 9914, 10070, 10918, 15656, 19570, 19828, 20140, 21836, 24785, 27295, 39140, 39656, 40280, 43672, 49570, 54590, 78280, 94183, 99140, 103721, 109180, 188366, 198280, 207442, 218360, 262721, 376732, 414884, 470915, 510571, 518605, 525442, 753464, 829768, 941830, 1021142, 1037210, 1050884, 1313605, 1883660, 2042284, 2074420, 2101768, 2552855, 2627210, 3767320, 4084568, 4148840, 4991699, 5105710, 5254420, 9700849, 9983398, 10211420, 10508840, 19401698, 19966796, 20422840, 24958495, 27060263, 38803396, 39933592, 48504245, 49916990, 54120526, 77606792, 97008490, 99833980, 108241052, 135301315, 194016980, 199667960, 216482104, 270602630, 388033960, 514144997, 541205260, 1028289994, 1082410520, 2056579988, 2570724985, 4113159976, 5141449970, 10282899940, 20565799880]

約数ペア:

[(1, 20565799880), (2, 10282899940), (4, 5141449970), (5, 4113159976), (8, 2570724985), (10, 2056579988), (19, 1082410520), (20, 1028289994), (38, 541205260), (40, 514144997), (53, 388033960), (76, 270602630), (95, 216482104), (103, 199667960), (106, 194016980), (152, 135301315), (190, 108241052), (206, 99833980), (212, 97008490), (265, 77606792), (380, 54120526), (412, 49916990), (424, 48504245), (515, 39933592), (530, 38803396), (760, 27060263), (824, 24958495), (1007, 20422840), (1030, 19966796), (1060, 19401698), (1957, 10508840), (2014, 10211420), (2060, 9983398), (2120, 9700849), (3914, 5254420), (4028, 5105710), (4120, 4991699), (4957, 4148840), (5035, 4084568), (5459, 3767320), (7828, 2627210), (8056, 2552855), (9785, 2101768), (9914, 2074420), (10070, 2042284), (10918, 1883660), (15656, 1313605), (19570, 1050884), (19828, 1037210), (20140, 1021142), (21836, 941830), (24785, 829768), (27295, 753464), (39140, 525442), (39656, 518605), (40280, 510571), (43672, 470915), (49570, 414884), (54590, 376732), (78280, 262721), (94183, 218360), (99140, 207442), (103721, 198280), (109180, 188366)]