19684860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25237}}^1$

素因数の和:25262

約数の個数: 48

約数和(自身を含む): 59359776

約数和(自身を除く): 39674916

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25237, 50474, 75711, 100948, 126185, 151422, 252370, 302844, 328081, 378555, 504740, 656162, 757110, 984243, 1312324, 1514220, 1640405, 1968486, 3280810, 3936972, 4921215, 6561620, 9842430, 19684860]

約数ペア:

[(1, 19684860), (2, 9842430), (3, 6561620), (4, 4921215), (5, 3936972), (6, 3280810), (10, 1968486), (12, 1640405), (13, 1514220), (15, 1312324), (20, 984243), (26, 757110), (30, 656162), (39, 504740), (52, 378555), (60, 328081), (65, 302844), (78, 252370), (130, 151422), (156, 126185), (195, 100948), (260, 75711), (390, 50474), (780, 25237)]