19956196

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{557}}^1$

素因数の和:640

約数の個数: 36

約数和(自身を含む): 38599092

約数和(自身を除く): 18642896

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 169, 212, 338, 557, 676, 689, 1114, 1378, 2228, 2756, 7241, 8957, 14482, 17914, 28964, 29521, 35828, 59042, 94133, 118084, 188266, 376532, 383773, 767546, 1535092, 4989049, 9978098, 19956196]

約数ペア:

[(1, 19956196), (2, 9978098), (4, 4989049), (13, 1535092), (26, 767546), (52, 383773), (53, 376532), (106, 188266), (169, 118084), (212, 94133), (338, 59042), (557, 35828), (676, 29521), (689, 28964), (1114, 17914), (1378, 14482), (2228, 8957), (2756, 7241)]