21765716

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{251}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 46287360

約数和(自身を除く): 24521644

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 163, 251, 266, 326, 502, 532, 652, 1004, 1141, 1757, 2282, 3097, 3514, 4564, 4769, 6194, 7028, 9538, 12388, 19076, 21679, 33383, 40913, 43358, 66766, 81826, 86716, 133532, 163652, 286391, 572782, 777347, 1145564, 1554694, 3109388, 5441429, 10882858, 21765716]

約数ペア:

[(1, 21765716), (2, 10882858), (4, 5441429), (7, 3109388), (14, 1554694), (19, 1145564), (28, 777347), (38, 572782), (76, 286391), (133, 163652), (163, 133532), (251, 86716), (266, 81826), (326, 66766), (502, 43358), (532, 40913), (652, 33383), (1004, 21679), (1141, 19076), (1757, 12388), (2282, 9538), (3097, 7028), (3514, 6194), (4564, 4769)]