19019780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{383}}^1$

素因数の和:596

約数の個数: 48

約数和(自身を含む): 43352064

約数和(自身を除く): 24332284

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 191, 260, 382, 383, 764, 766, 955, 1532, 1910, 1915, 2483, 3820, 3830, 4966, 4979, 7660, 9932, 9958, 12415, 19916, 24830, 24895, 49660, 49790, 73153, 99580, 146306, 292612, 365765, 731530, 950989, 1463060, 1901978, 3803956, 4754945, 9509890, 19019780]

約数ペア:

[(1, 19019780), (2, 9509890), (4, 4754945), (5, 3803956), (10, 1901978), (13, 1463060), (20, 950989), (26, 731530), (52, 365765), (65, 292612), (130, 146306), (191, 99580), (260, 73153), (382, 49790), (383, 49660), (764, 24895), (766, 24830), (955, 19916), (1532, 12415), (1910, 9958), (1915, 9932), (2483, 7660), (3820, 4979), (3830, 4966)]