19772740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{673}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 45179568

約数和(自身を除く): 25406828

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 113, 130, 226, 260, 452, 565, 673, 1130, 1346, 1469, 2260, 2692, 2938, 3365, 5876, 6730, 7345, 8749, 13460, 14690, 17498, 29380, 34996, 43745, 76049, 87490, 152098, 174980, 304196, 380245, 760490, 988637, 1520980, 1977274, 3954548, 4943185, 9886370, 19772740]

約数ペア:

[(1, 19772740), (2, 9886370), (4, 4943185), (5, 3954548), (10, 1977274), (13, 1520980), (20, 988637), (26, 760490), (52, 380245), (65, 304196), (113, 174980), (130, 152098), (226, 87490), (260, 76049), (452, 43745), (565, 34996), (673, 29380), (1130, 17498), (1346, 14690), (1469, 13460), (2260, 8749), (2692, 7345), (2938, 6730), (3365, 5876)]