21730905

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{463}}^1$

素因数の和:630

約数の個数: 48

約数和(自身を含む): 43430400

約数和(自身を除く): 21699495

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 149, 315, 447, 463, 745, 1043, 1341, 1389, 2235, 2315, 3129, 3241, 4167, 5215, 6705, 6945, 9387, 9723, 15645, 16205, 20835, 29169, 46935, 48615, 68987, 145845, 206961, 344935, 482909, 620883, 1034805, 1448727, 2414545, 3104415, 4346181, 7243635, 21730905]

約数ペア:

[(1, 21730905), (3, 7243635), (5, 4346181), (7, 3104415), (9, 2414545), (15, 1448727), (21, 1034805), (35, 620883), (45, 482909), (63, 344935), (105, 206961), (149, 145845), (315, 68987), (447, 48615), (463, 46935), (745, 29169), (1043, 20835), (1341, 16205), (1389, 15645), (2235, 9723), (2315, 9387), (3129, 6945), (3241, 6705), (4167, 5215)]