28218477

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{359}}^1$

素因数の和:585

約数の個数: 32

約数和(自身を含む): 45619200

約数和(自身を除く): 17400723

約数列:

[1, 3, 7, 19, 21, 57, 133, 197, 359, 399, 591, 1077, 1379, 2513, 3743, 4137, 6821, 7539, 11229, 20463, 26201, 47747, 70723, 78603, 143241, 212169, 495061, 1343737, 1485183, 4031211, 9406159, 28218477]

約数ペア:

[(1, 28218477), (3, 9406159), (7, 4031211), (19, 1485183), (21, 1343737), (57, 495061), (133, 212169), (197, 143241), (359, 78603), (399, 70723), (591, 47747), (1077, 26201), (1379, 20463), (2513, 11229), (3743, 7539), (4137, 6821)]