21480537

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{181}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 33022080

約数和(自身を除く): 11541543

約数列:

[1, 3, 13, 17, 39, 51, 179, 181, 221, 537, 543, 663, 2327, 2353, 3043, 3077, 6981, 7059, 9129, 9231, 32399, 39559, 40001, 97197, 118677, 120003, 421187, 550783, 1263561, 1652349, 7160179, 21480537]

約数ペア:

[(1, 21480537), (3, 7160179), (13, 1652349), (17, 1263561), (39, 550783), (51, 421187), (179, 120003), (181, 118677), (221, 97197), (537, 40001), (543, 39559), (663, 32399), (2327, 9231), (2353, 9129), (3043, 7059), (3077, 6981)]