21440132

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{211}}^1$

素因数の和:432

約数の個数: 48

約数和(自身を含む): 45588480

約数和(自身を除く): 24148348

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 191, 211, 266, 382, 422, 532, 764, 844, 1337, 1477, 2674, 2954, 3629, 4009, 5348, 5908, 7258, 8018, 14516, 16036, 25403, 28063, 40301, 50806, 56126, 80602, 101612, 112252, 161204, 282107, 564214, 765719, 1128428, 1531438, 3062876, 5360033, 10720066, 21440132]

約数ペア:

[(1, 21440132), (2, 10720066), (4, 5360033), (7, 3062876), (14, 1531438), (19, 1128428), (28, 765719), (38, 564214), (76, 282107), (133, 161204), (191, 112252), (211, 101612), (266, 80602), (382, 56126), (422, 50806), (532, 40301), (764, 28063), (844, 25403), (1337, 16036), (1477, 14516), (2674, 8018), (2954, 7258), (3629, 5908), (4009, 5348)]