21589215

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{271}}^1$

素因数の和:439

約数の個数: 32

約数和(自身を含む): 35721216

約数和(自身を除く): 14132001

約数列:

[1, 3, 5, 15, 47, 113, 141, 235, 271, 339, 565, 705, 813, 1355, 1695, 4065, 5311, 12737, 15933, 26555, 30623, 38211, 63685, 79665, 91869, 153115, 191055, 459345, 1439281, 4317843, 7196405, 21589215]

約数ペア:

[(1, 21589215), (3, 7196405), (5, 4317843), (15, 1439281), (47, 459345), (113, 191055), (141, 153115), (235, 91869), (271, 79665), (339, 63685), (565, 38211), (705, 30623), (813, 26555), (1355, 15933), (1695, 12737), (4065, 5311)]