20125658540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{405269}}^1$

素因数の和:405482

約数の個数: 48

約数和(自身を含む): 45753361920

約数和(自身を除く): 25627703380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 191, 260, 382, 764, 955, 1910, 2483, 3820, 4966, 9932, 12415, 24830, 49660, 405269, 810538, 1621076, 2026345, 4052690, 5268497, 8105380, 10536994, 21073988, 26342485, 52684970, 77406379, 105369940, 154812758, 309625516, 387031895, 774063790, 1006282927, 1548127580, 2012565854, 4025131708, 5031414635, 10062829270, 20125658540]

約数ペア:

[(1, 20125658540), (2, 10062829270), (4, 5031414635), (5, 4025131708), (10, 2012565854), (13, 1548127580), (20, 1006282927), (26, 774063790), (52, 387031895), (65, 309625516), (130, 154812758), (191, 105369940), (260, 77406379), (382, 52684970), (764, 26342485), (955, 21073988), (1910, 10536994), (2483, 8105380), (3820, 5268497), (4966, 4052690), (9932, 2026345), (12415, 1621076), (24830, 810538), (49660, 405269)]