30666740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{211}}^1$

素因数の和:289

約数の個数: 72

約数和(自身を含む): 71695008

約数和(自身を除く): 41028268

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 169, 172, 211, 215, 260, 338, 422, 430, 559, 676, 844, 845, 860, 1055, 1118, 1690, 2110, 2236, 2743, 2795, 3380, 4220, 5486, 5590, 7267, 9073, 10972, 11180, 13715, 14534, 18146, 27430, 29068, 35659, 36292, 36335, 45365, 54860, 71318, 72670, 90730, 117949, 142636, 145340, 178295, 181460, 235898, 356590, 471796, 589745, 713180, 1179490, 1533337, 2358980, 3066674, 6133348, 7666685, 15333370, 30666740]

約数ペア:

[(1, 30666740), (2, 15333370), (4, 7666685), (5, 6133348), (10, 3066674), (13, 2358980), (20, 1533337), (26, 1179490), (43, 713180), (52, 589745), (65, 471796), (86, 356590), (130, 235898), (169, 181460), (172, 178295), (211, 145340), (215, 142636), (260, 117949), (338, 90730), (422, 72670), (430, 71318), (559, 54860), (676, 45365), (844, 36335), (845, 36292), (860, 35659), (1055, 29068), (1118, 27430), (1690, 18146), (2110, 14534), (2236, 13715), (2743, 11180), (2795, 10972), (3380, 9073), (4220, 7267), (5486, 5590)]