42949940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{991}}^1$

素因数の和:1208

約数の個数: 48

約数和(自身を含む): 98993664

約数和(自身を除く): 56043724

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 197, 220, 394, 788, 985, 991, 1970, 1982, 2167, 3940, 3964, 4334, 4955, 8668, 9910, 10835, 10901, 19820, 21670, 21802, 43340, 43604, 54505, 109010, 195227, 218020, 390454, 780908, 976135, 1952270, 2147497, 3904540, 4294994, 8589988, 10737485, 21474970, 42949940]

約数ペア:

[(1, 42949940), (2, 21474970), (4, 10737485), (5, 8589988), (10, 4294994), (11, 3904540), (20, 2147497), (22, 1952270), (44, 976135), (55, 780908), (110, 390454), (197, 218020), (220, 195227), (394, 109010), (788, 54505), (985, 43604), (991, 43340), (1970, 21802), (1982, 21670), (2167, 19820), (3940, 10901), (3964, 10835), (4334, 9910), (4955, 8668)]