12905440

素因数分解:

$2^5\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1021}}^1$

素因数の和:1115

約数の個数: 48

約数和(自身を含む): 30905280

約数和(自身を除く): 17999840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 79, 80, 158, 160, 316, 395, 632, 790, 1021, 1264, 1580, 2042, 2528, 3160, 4084, 5105, 6320, 8168, 10210, 12640, 16336, 20420, 32672, 40840, 80659, 81680, 161318, 163360, 322636, 403295, 645272, 806590, 1290544, 1613180, 2581088, 3226360, 6452720, 12905440]

約数ペア:

[(1, 12905440), (2, 6452720), (4, 3226360), (5, 2581088), (8, 1613180), (10, 1290544), (16, 806590), (20, 645272), (32, 403295), (40, 322636), (79, 163360), (80, 161318), (158, 81680), (160, 80659), (316, 40840), (395, 32672), (632, 20420), (790, 16336), (1021, 12640), (1264, 10210), (1580, 8168), (2042, 6320), (2528, 5105), (3160, 4084)]