19865450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1901}}^1$

素因数の和:1943

約数の個数: 48

約数和(自身を含む): 42452640

約数和(自身を除く): 22587190

約数列:

[1, 2, 5, 10, 11, 19, 22, 25, 38, 50, 55, 95, 110, 190, 209, 275, 418, 475, 550, 950, 1045, 1901, 2090, 3802, 5225, 9505, 10450, 19010, 20911, 36119, 41822, 47525, 72238, 95050, 104555, 180595, 209110, 361190, 397309, 522775, 794618, 902975, 1045550, 1805950, 1986545, 3973090, 9932725, 19865450]

約数ペア:

[(1, 19865450), (2, 9932725), (5, 3973090), (10, 1986545), (11, 1805950), (19, 1045550), (22, 902975), (25, 794618), (38, 522775), (50, 397309), (55, 361190), (95, 209110), (110, 180595), (190, 104555), (209, 95050), (275, 72238), (418, 47525), (475, 41822), (550, 36119), (950, 20911), (1045, 19010), (1901, 10450), (2090, 9505), (3802, 5225)]